./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/seq-3.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/seq-3.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-12 21:30:57,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 21:30:57,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 21:30:57,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 21:30:57,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 21:30:57,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 21:30:57,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 21:30:57,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 21:30:57,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 21:30:57,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 21:30:57,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 21:30:57,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 21:30:57,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 21:30:57,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 21:30:57,631 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 21:30:57,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 21:30:57,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 21:30:57,632 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 21:30:57,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 21:30:57,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 21:30:57,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 21:30:57,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 21:30:57,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 21:30:57,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 21:30:57,636 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 21:30:57,636 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 21:30:57,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 21:30:57,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 21:30:57,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 21:30:57,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 21:30:57,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 21:30:57,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 21:30:57,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:30:57,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 21:30:57,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 21:30:57,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 21:30:57,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 21:30:57,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 21:30:57,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 21:30:57,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 21:30:57,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 21:30:57,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 21:30:57,644 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 21:30:57,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 21:30:57,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 21:30:57,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 21:30:57,920 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 21:30:57,920 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 21:30:57,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/seq-3.i [2024-09-12 21:30:59,327 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 21:30:59,508 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 21:30:59,509 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/seq-3.i [2024-09-12 21:30:59,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b80bc9b54/d536c785a9934dd2bbe0245fd68ce30a/FLAGa29a74b94 [2024-09-12 21:30:59,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b80bc9b54/d536c785a9934dd2bbe0245fd68ce30a [2024-09-12 21:30:59,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 21:30:59,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 21:30:59,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 21:30:59,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 21:30:59,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 21:30:59,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cafd4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59, skipping insertion in model container [2024-09-12 21:30:59,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,572 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 21:30:59,703 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/seq-3.i[893,906] [2024-09-12 21:30:59,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:30:59,735 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 21:30:59,752 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/seq-3.i[893,906] [2024-09-12 21:30:59,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:30:59,784 INFO L204 MainTranslator]: Completed translation [2024-09-12 21:30:59,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59 WrapperNode [2024-09-12 21:30:59,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 21:30:59,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 21:30:59,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 21:30:59,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 21:30:59,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,811 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 21:30:59,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 21:30:59,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 21:30:59,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 21:30:59,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 21:30:59,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,833 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 21:30:59,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 21:30:59,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 21:30:59,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 21:30:59,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 21:30:59,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (1/1) ... [2024-09-12 21:30:59,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:30:59,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:30:59,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 21:30:59,883 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 21:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 21:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 21:30:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 21:30:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 21:30:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 21:30:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 21:30:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 21:30:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 21:30:59,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 21:30:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 21:30:59,997 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 21:31:00,000 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 21:31:00,152 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-12 21:31:00,153 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 21:31:00,167 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 21:31:00,167 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-12 21:31:00,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:31:00 BoogieIcfgContainer [2024-09-12 21:31:00,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 21:31:00,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 21:31:00,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 21:31:00,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 21:31:00,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 09:30:59" (1/3) ... [2024-09-12 21:31:00,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122b8c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:31:00, skipping insertion in model container [2024-09-12 21:31:00,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:30:59" (2/3) ... [2024-09-12 21:31:00,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122b8c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:31:00, skipping insertion in model container [2024-09-12 21:31:00,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:31:00" (3/3) ... [2024-09-12 21:31:00,174 INFO L112 eAbstractionObserver]: Analyzing ICFG seq-3.i [2024-09-12 21:31:00,186 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 21:31:00,186 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 21:31:00,236 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 21:31:00,243 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2baecf88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 21:31:00,243 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 21:31:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:31:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 21:31:00,272 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:00,273 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:00,274 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:00,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash 961061654, now seen corresponding path program 1 times [2024-09-12 21:31:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582727660] [2024-09-12 21:31:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:00,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:00,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:00,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582727660] [2024-09-12 21:31:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582727660] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:31:00,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:31:00,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 21:31:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34178370] [2024-09-12 21:31:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:31:00,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 21:31:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:00,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 21:31:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 21:31:00,722 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:31:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:00,825 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2024-09-12 21:31:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 21:31:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 21:31:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:00,835 INFO L225 Difference]: With dead ends: 52 [2024-09-12 21:31:00,836 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 21:31:00,838 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-12 21:31:00,841 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:00,842 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 21:31:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-09-12 21:31:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 21:31:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-12 21:31:00,874 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2024-09-12 21:31:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:00,874 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-12 21:31:00,874 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:31:00,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-12 21:31:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 21:31:00,876 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:00,876 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:00,876 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 21:31:00,877 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:00,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1906170241, now seen corresponding path program 1 times [2024-09-12 21:31:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:00,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068393041] [2024-09-12 21:31:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:00,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:01,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:01,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068393041] [2024-09-12 21:31:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068393041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408808617] [2024-09-12 21:31:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:01,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:01,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:01,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:01,063 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 21:31:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:01,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 21:31:01,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:01,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 21:31:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408808617] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:31:01,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 21:31:01,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-12 21:31:01,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189600887] [2024-09-12 21:31:01,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:31:01,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 21:31:01,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 21:31:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 21:31:01,212 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:31:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:01,267 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-09-12 21:31:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 21:31:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 21:31:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:01,269 INFO L225 Difference]: With dead ends: 35 [2024-09-12 21:31:01,269 INFO L226 Difference]: Without dead ends: 33 [2024-09-12 21:31:01,269 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-12 21:31:01,273 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:01,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:31:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-12 21:31:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-09-12 21:31:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:31:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-09-12 21:31:01,285 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2024-09-12 21:31:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:01,287 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-09-12 21:31:01,287 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:31:01,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-09-12 21:31:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 21:31:01,288 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:01,288 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:01,305 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 21:31:01,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:01,489 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:01,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 468810935, now seen corresponding path program 1 times [2024-09-12 21:31:01,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:01,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030349966] [2024-09-12 21:31:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:01,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:01,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:01,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:31:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:01,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030349966] [2024-09-12 21:31:01,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030349966] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247824754] [2024-09-12 21:31:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:01,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:01,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:01,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:01,732 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 21:31:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:01,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 21:31:01,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:01,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247824754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:02,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-12 21:31:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960843559] [2024-09-12 21:31:02,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:02,023 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 21:31:02,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 21:31:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-09-12 21:31:02,026 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:02,136 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-09-12 21:31:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 21:31:02,137 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-09-12 21:31:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:02,138 INFO L225 Difference]: With dead ends: 51 [2024-09-12 21:31:02,139 INFO L226 Difference]: Without dead ends: 37 [2024-09-12 21:31:02,139 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-09-12 21:31:02,140 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:02,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 130 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:02,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-12 21:31:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2024-09-12 21:31:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:31:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-12 21:31:02,148 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 24 [2024-09-12 21:31:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:02,148 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-12 21:31:02,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:02,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-12 21:31:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 21:31:02,149 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:02,150 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:02,161 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:02,350 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:02,351 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:02,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1260603702, now seen corresponding path program 1 times [2024-09-12 21:31:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:02,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513382885] [2024-09-12 21:31:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:02,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:02,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:02,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:31:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:02,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:02,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513382885] [2024-09-12 21:31:02,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513382885] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:02,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260157296] [2024-09-12 21:31:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:02,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:02,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:02,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 21:31:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:02,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 21:31:02,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:02,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260157296] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:02,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:02,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-09-12 21:31:02,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169626655] [2024-09-12 21:31:02,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:02,693 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 21:31:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 21:31:02,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-09-12 21:31:02,695 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:02,766 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2024-09-12 21:31:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 21:31:02,766 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-09-12 21:31:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:02,767 INFO L225 Difference]: With dead ends: 54 [2024-09-12 21:31:02,767 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 21:31:02,768 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-09-12 21:31:02,769 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:02,769 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:31:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 21:31:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2024-09-12 21:31:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:31:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-12 21:31:02,775 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2024-09-12 21:31:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:02,776 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-12 21:31:02,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:02,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-12 21:31:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 21:31:02,777 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:02,777 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:02,794 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:02,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:02,982 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:02,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1756686302, now seen corresponding path program 2 times [2024-09-12 21:31:02,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:02,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136117294] [2024-09-12 21:31:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:02,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:03,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:03,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 21:31:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:03,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:03,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136117294] [2024-09-12 21:31:03,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136117294] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:03,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113408940] [2024-09-12 21:31:03,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:03,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:03,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:03,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:03,083 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 21:31:03,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:03,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:03,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 21:31:03,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:03,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:31:03,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113408940] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:03,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:03,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-12 21:31:03,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457786702] [2024-09-12 21:31:03,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:03,291 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 21:31:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 21:31:03,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 21:31:03,292 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 21:31:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:03,353 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-09-12 21:31:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 21:31:03,354 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-09-12 21:31:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:03,355 INFO L225 Difference]: With dead ends: 45 [2024-09-12 21:31:03,356 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 21:31:03,357 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-12 21:31:03,358 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:03,358 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 113 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:31:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 21:31:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-12 21:31:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-12 21:31:03,371 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2024-09-12 21:31:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:03,372 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-12 21:31:03,372 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 21:31:03,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-12 21:31:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 21:31:03,373 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:03,373 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:03,388 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:03,573 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:03,574 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:03,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:03,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2027964682, now seen corresponding path program 3 times [2024-09-12 21:31:03,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:03,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98938740] [2024-09-12 21:31:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:03,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:03,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 21:31:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:03,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:03,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:03,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98938740] [2024-09-12 21:31:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98938740] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637920328] [2024-09-12 21:31:03,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:03,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:03,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 21:31:03,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 21:31:03,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:03,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 21:31:03,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:03,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637920328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:04,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:04,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-09-12 21:31:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557100828] [2024-09-12 21:31:04,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:04,039 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 21:31:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 21:31:04,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-12 21:31:04,040 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:04,165 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-09-12 21:31:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 21:31:04,166 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2024-09-12 21:31:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:04,167 INFO L225 Difference]: With dead ends: 68 [2024-09-12 21:31:04,167 INFO L226 Difference]: Without dead ends: 51 [2024-09-12 21:31:04,167 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-09-12 21:31:04,168 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:04,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 170 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-12 21:31:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2024-09-12 21:31:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-09-12 21:31:04,176 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2024-09-12 21:31:04,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:04,176 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-09-12 21:31:04,176 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:04,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:04,177 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-09-12 21:31:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 21:31:04,177 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:04,178 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:04,194 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 21:31:04,378 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 21:31:04,378 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:04,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:04,379 INFO L85 PathProgramCache]: Analyzing trace with hash 196646005, now seen corresponding path program 1 times [2024-09-12 21:31:04,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:04,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533480476] [2024-09-12 21:31:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:04,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 21:31:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533480476] [2024-09-12 21:31:04,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533480476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772705333] [2024-09-12 21:31:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:04,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:04,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:04,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:04,543 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 21:31:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:04,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 21:31:04,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:04,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772705333] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:04,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:04,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-09-12 21:31:04,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524880617] [2024-09-12 21:31:04,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:04,849 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 21:31:04,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 21:31:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:31:04,850 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:04,945 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2024-09-12 21:31:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 21:31:04,945 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2024-09-12 21:31:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:04,946 INFO L225 Difference]: With dead ends: 69 [2024-09-12 21:31:04,946 INFO L226 Difference]: Without dead ends: 52 [2024-09-12 21:31:04,947 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-09-12 21:31:04,947 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:04,948 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 136 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-12 21:31:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2024-09-12 21:31:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-09-12 21:31:04,960 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2024-09-12 21:31:04,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:04,960 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-09-12 21:31:04,960 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:04,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:04,961 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-09-12 21:31:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 21:31:04,961 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:04,962 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:04,978 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 21:31:05,166 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:05,167 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:05,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:05,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1948349674, now seen corresponding path program 2 times [2024-09-12 21:31:05,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:05,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866682827] [2024-09-12 21:31:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:05,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 21:31:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866682827] [2024-09-12 21:31:05,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866682827] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229969839] [2024-09-12 21:31:05,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:05,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:05,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:05,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:05,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 21:31:05,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:05,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:05,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 21:31:05,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:05,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:05,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229969839] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:05,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:05,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-09-12 21:31:05,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572248517] [2024-09-12 21:31:05,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:05,596 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 21:31:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 21:31:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-09-12 21:31:05,597 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:05,692 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-09-12 21:31:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 21:31:05,693 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2024-09-12 21:31:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:05,695 INFO L225 Difference]: With dead ends: 71 [2024-09-12 21:31:05,695 INFO L226 Difference]: Without dead ends: 54 [2024-09-12 21:31:05,695 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:31:05,696 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:05,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-12 21:31:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2024-09-12 21:31:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-09-12 21:31:05,710 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 32 [2024-09-12 21:31:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:05,710 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-09-12 21:31:05,710 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:05,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-09-12 21:31:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 21:31:05,713 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:05,714 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:05,729 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 21:31:05,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:05,916 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:05,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash 21542753, now seen corresponding path program 4 times [2024-09-12 21:31:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:05,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241061236] [2024-09-12 21:31:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:05,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:05,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:31:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:06,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:31:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:06,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:06,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241061236] [2024-09-12 21:31:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241061236] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936682988] [2024-09-12 21:31:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:06,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:06,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:06,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:06,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 21:31:06,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:06,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:06,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 21:31:06,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:06,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:31:06,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936682988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:06,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:06,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-12 21:31:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169768929] [2024-09-12 21:31:06,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:06,156 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 21:31:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 21:31:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-12 21:31:06,157 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:31:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:06,230 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-09-12 21:31:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 21:31:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-09-12 21:31:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:06,231 INFO L225 Difference]: With dead ends: 55 [2024-09-12 21:31:06,231 INFO L226 Difference]: Without dead ends: 53 [2024-09-12 21:31:06,231 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-12 21:31:06,232 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:06,232 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 137 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-12 21:31:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-09-12 21:31:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.162162162162162) internal successors, (43), 38 states have internal predecessors, (43), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:31:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-09-12 21:31:06,239 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 33 [2024-09-12 21:31:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:06,239 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-09-12 21:31:06,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:31:06,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-09-12 21:31:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 21:31:06,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:06,241 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:06,258 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 21:31:06,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:06,446 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:06,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1043643689, now seen corresponding path program 5 times [2024-09-12 21:31:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:06,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854835839] [2024-09-12 21:31:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:06,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:06,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:06,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:31:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:06,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:31:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:06,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:31:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:06,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854835839] [2024-09-12 21:31:06,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854835839] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:06,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204030279] [2024-09-12 21:31:06,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:06,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:06,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:06,601 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:06,602 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 21:31:06,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 21:31:06,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:06,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 21:31:06,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:06,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:06,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204030279] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:06,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:06,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-12 21:31:06,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557934498] [2024-09-12 21:31:06,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:06,983 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 21:31:06,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 21:31:06,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:31:06,984 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:07,129 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2024-09-12 21:31:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 21:31:07,130 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-12 21:31:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:07,131 INFO L225 Difference]: With dead ends: 85 [2024-09-12 21:31:07,131 INFO L226 Difference]: Without dead ends: 65 [2024-09-12 21:31:07,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-09-12 21:31:07,132 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:07,132 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 247 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-12 21:31:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2024-09-12 21:31:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:31:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-09-12 21:31:07,139 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2024-09-12 21:31:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:07,140 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-09-12 21:31:07,140 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:07,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-09-12 21:31:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 21:31:07,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:07,141 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:07,158 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:07,344 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 21:31:07,345 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:07,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash -802541226, now seen corresponding path program 2 times [2024-09-12 21:31:07,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:07,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674885125] [2024-09-12 21:31:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:07,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:07,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:31:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:07,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:31:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:07,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:31:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:07,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674885125] [2024-09-12 21:31:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674885125] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253561460] [2024-09-12 21:31:07,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:07,499 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:07,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 21:31:07,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:07,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:07,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 21:31:07,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:07,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253561460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:07,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:07,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-09-12 21:31:07,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101193232] [2024-09-12 21:31:07,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:07,847 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 21:31:07,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 21:31:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-09-12 21:31:07,848 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:07,966 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2024-09-12 21:31:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 21:31:07,967 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-12 21:31:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:07,968 INFO L225 Difference]: With dead ends: 87 [2024-09-12 21:31:07,968 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 21:31:07,968 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:31:07,969 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:07,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 190 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 21:31:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2024-09-12 21:31:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:31:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-09-12 21:31:07,977 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2024-09-12 21:31:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:07,977 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-09-12 21:31:07,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:07,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:07,978 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-09-12 21:31:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 21:31:07,978 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:07,978 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:07,994 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 21:31:08,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 21:31:08,179 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:08,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1560540919, now seen corresponding path program 3 times [2024-09-12 21:31:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:08,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486995678] [2024-09-12 21:31:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:08,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:31:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:31:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:31:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:08,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486995678] [2024-09-12 21:31:08,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486995678] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719388063] [2024-09-12 21:31:08,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:08,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:08,322 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:08,324 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 21:31:08,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 21:31:08,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:08,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 21:31:08,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:08,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:08,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719388063] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:08,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-09-12 21:31:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105054241] [2024-09-12 21:31:08,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:08,654 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 21:31:08,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 21:31:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-09-12 21:31:08,655 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:08,771 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2024-09-12 21:31:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 21:31:08,772 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-12 21:31:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:08,773 INFO L225 Difference]: With dead ends: 87 [2024-09-12 21:31:08,773 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 21:31:08,773 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-09-12 21:31:08,774 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:08,774 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 154 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 21:31:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2024-09-12 21:31:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:31:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-09-12 21:31:08,786 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2024-09-12 21:31:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:08,787 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-09-12 21:31:08,787 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:08,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-09-12 21:31:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 21:31:08,788 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:08,788 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:08,804 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 21:31:08,989 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:08,989 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:08,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash 251296054, now seen corresponding path program 3 times [2024-09-12 21:31:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:08,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146329778] [2024-09-12 21:31:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:31:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:31:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:31:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:09,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146329778] [2024-09-12 21:31:09,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146329778] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863287784] [2024-09-12 21:31:09,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:09,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:09,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:09,125 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:09,126 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 21:31:09,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 21:31:09,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:09,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 21:31:09,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:09,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863287784] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:09,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:09,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2024-09-12 21:31:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229761803] [2024-09-12 21:31:09,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:09,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 21:31:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 21:31:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-09-12 21:31:09,425 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:09,529 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2024-09-12 21:31:09,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 21:31:09,529 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-12 21:31:09,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:09,530 INFO L225 Difference]: With dead ends: 88 [2024-09-12 21:31:09,531 INFO L226 Difference]: Without dead ends: 68 [2024-09-12 21:31:09,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-09-12 21:31:09,532 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:09,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 149 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-12 21:31:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2024-09-12 21:31:09,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:31:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-09-12 21:31:09,541 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 40 [2024-09-12 21:31:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:09,542 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-09-12 21:31:09,542 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:09,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-09-12 21:31:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 21:31:09,546 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:09,546 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:09,562 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 21:31:09,750 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 21:31:09,750 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:09,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -74536894, now seen corresponding path program 6 times [2024-09-12 21:31:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:09,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519734096] [2024-09-12 21:31:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:09,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:31:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:31:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:31:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519734096] [2024-09-12 21:31:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519734096] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876986825] [2024-09-12 21:31:09,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:09,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:09,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:09,847 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:09,850 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 21:31:09,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-12 21:31:09,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:09,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 21:31:09,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:09,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:31:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876986825] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:10,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-12 21:31:10,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864383328] [2024-09-12 21:31:10,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:10,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 21:31:10,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 21:31:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-12 21:31:10,016 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:10,089 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2024-09-12 21:31:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 21:31:10,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2024-09-12 21:31:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:10,091 INFO L225 Difference]: With dead ends: 65 [2024-09-12 21:31:10,091 INFO L226 Difference]: Without dead ends: 63 [2024-09-12 21:31:10,091 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-12 21:31:10,092 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:10,092 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 155 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-12 21:31:10,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-09-12 21:31:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-09-12 21:31:10,098 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 41 [2024-09-12 21:31:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:10,099 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-09-12 21:31:10,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:31:10,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-09-12 21:31:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 21:31:10,100 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:10,100 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:10,116 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 21:31:10,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 21:31:10,300 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:10,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash 115327702, now seen corresponding path program 7 times [2024-09-12 21:31:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:10,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223805991] [2024-09-12 21:31:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:10,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:10,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:31:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:10,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:31:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:10,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:31:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:10,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:31:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:10,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223805991] [2024-09-12 21:31:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223805991] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:10,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093987422] [2024-09-12 21:31:10,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:10,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:10,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:10,468 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:10,471 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 21:31:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:10,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 21:31:10,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:10,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093987422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:10,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:10,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-09-12 21:31:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222249360] [2024-09-12 21:31:10,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:10,904 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 21:31:10,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 21:31:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2024-09-12 21:31:10,905 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:11,040 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2024-09-12 21:31:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:31:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-12 21:31:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:11,042 INFO L225 Difference]: With dead ends: 102 [2024-09-12 21:31:11,042 INFO L226 Difference]: Without dead ends: 79 [2024-09-12 21:31:11,042 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 83 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2024-09-12 21:31:11,043 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:11,043 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-12 21:31:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2024-09-12 21:31:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-12 21:31:11,058 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-12 21:31:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:11,059 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-12 21:31:11,059 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:11,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-12 21:31:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 21:31:11,060 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:11,060 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:11,076 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 21:31:11,260 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 21:31:11,261 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:11,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash 73646677, now seen corresponding path program 4 times [2024-09-12 21:31:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376075330] [2024-09-12 21:31:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:11,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:11,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:31:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:11,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:31:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:11,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:31:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:11,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:31:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:11,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376075330] [2024-09-12 21:31:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376075330] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171438106] [2024-09-12 21:31:11,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:11,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:11,426 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:11,427 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 21:31:11,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:11,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:11,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 21:31:11,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:11,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171438106] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:11,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-09-12 21:31:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318164921] [2024-09-12 21:31:11,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:11,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 21:31:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 21:31:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:31:11,834 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:11,957 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2024-09-12 21:31:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:31:11,957 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-12 21:31:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:11,958 INFO L225 Difference]: With dead ends: 105 [2024-09-12 21:31:11,958 INFO L226 Difference]: Without dead ends: 82 [2024-09-12 21:31:11,958 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-09-12 21:31:11,959 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:11,959 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 172 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-12 21:31:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2024-09-12 21:31:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-12 21:31:11,973 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-12 21:31:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:11,973 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-12 21:31:11,973 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:11,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-12 21:31:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 21:31:11,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:11,974 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:11,988 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:12,178 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 21:31:12,178 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:12,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1867360522, now seen corresponding path program 5 times [2024-09-12 21:31:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51391334] [2024-09-12 21:31:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:12,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:12,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:31:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:12,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:31:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:12,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:31:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:12,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:31:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:12,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:12,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51391334] [2024-09-12 21:31:12,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51391334] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:12,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547972333] [2024-09-12 21:31:12,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:12,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:12,344 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:12,345 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 21:31:12,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-12 21:31:12,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:12,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 21:31:12,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:12,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:12,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547972333] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:12,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2024-09-12 21:31:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621706860] [2024-09-12 21:31:12,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:12,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 21:31:12,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:12,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 21:31:12,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-09-12 21:31:12,746 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:12,848 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-09-12 21:31:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:31:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-12 21:31:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:12,850 INFO L225 Difference]: With dead ends: 106 [2024-09-12 21:31:12,850 INFO L226 Difference]: Without dead ends: 83 [2024-09-12 21:31:12,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:31:12,851 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:12,851 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 164 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-12 21:31:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2024-09-12 21:31:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-12 21:31:12,859 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-12 21:31:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:12,859 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-12 21:31:12,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:12,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-12 21:31:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 21:31:12,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:12,860 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:12,874 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 21:31:13,060 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:13,061 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:13,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:13,061 INFO L85 PathProgramCache]: Analyzing trace with hash 702425653, now seen corresponding path program 6 times [2024-09-12 21:31:13,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:13,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220324576] [2024-09-12 21:31:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:13,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:13,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:13,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:31:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:13,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:31:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:13,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:31:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:13,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:31:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:13,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:13,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220324576] [2024-09-12 21:31:13,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220324576] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:13,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142411349] [2024-09-12 21:31:13,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:13,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:13,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:13,226 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:13,228 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 21:31:13,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-12 21:31:13,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:13,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 21:31:13,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:13,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:13,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142411349] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:13,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:13,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2024-09-12 21:31:13,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278547235] [2024-09-12 21:31:13,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:13,604 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 21:31:13,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 21:31:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2024-09-12 21:31:13,606 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:13,727 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2024-09-12 21:31:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:31:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-12 21:31:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:13,729 INFO L225 Difference]: With dead ends: 105 [2024-09-12 21:31:13,729 INFO L226 Difference]: Without dead ends: 82 [2024-09-12 21:31:13,729 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-09-12 21:31:13,730 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:13,730 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 221 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-12 21:31:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2024-09-12 21:31:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-12 21:31:13,738 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-12 21:31:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:13,739 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-12 21:31:13,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:13,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-12 21:31:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 21:31:13,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:13,739 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:13,755 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 21:31:13,943 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 21:31:13,944 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:13,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1616605974, now seen corresponding path program 4 times [2024-09-12 21:31:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092029807] [2024-09-12 21:31:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:31:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:31:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:31:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:31:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:14,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092029807] [2024-09-12 21:31:14,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092029807] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869364217] [2024-09-12 21:31:14,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:14,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:14,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:14,082 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:14,087 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 21:31:14,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:14,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:14,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 21:31:14,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:14,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869364217] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:14,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:14,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 25 [2024-09-12 21:31:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868082420] [2024-09-12 21:31:14,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:14,441 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 21:31:14,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 21:31:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:31:14,442 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:14,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:14,538 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2024-09-12 21:31:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:31:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-12 21:31:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:14,540 INFO L225 Difference]: With dead ends: 105 [2024-09-12 21:31:14,540 INFO L226 Difference]: Without dead ends: 82 [2024-09-12 21:31:14,541 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-09-12 21:31:14,541 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:14,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 176 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-12 21:31:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2024-09-12 21:31:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 49 states have internal predecessors, (56), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2024-09-12 21:31:14,549 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 48 [2024-09-12 21:31:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:14,549 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2024-09-12 21:31:14,549 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:14,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2024-09-12 21:31:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 21:31:14,550 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:14,550 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:14,565 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 21:31:14,750 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:14,751 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:14,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash -972518079, now seen corresponding path program 8 times [2024-09-12 21:31:14,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:14,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604689718] [2024-09-12 21:31:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:31:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:31:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:31:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:31:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:14,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:14,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604689718] [2024-09-12 21:31:14,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604689718] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:14,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564524237] [2024-09-12 21:31:14,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:14,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:14,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:14,851 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:14,853 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 21:31:14,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:14,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:14,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 21:31:14,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:14,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:31:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564524237] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:15,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:15,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-12 21:31:15,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471688457] [2024-09-12 21:31:15,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:15,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 21:31:15,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:15,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 21:31:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-12 21:31:15,046 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:31:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:15,129 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2024-09-12 21:31:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 21:31:15,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 49 [2024-09-12 21:31:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:15,130 INFO L225 Difference]: With dead ends: 75 [2024-09-12 21:31:15,130 INFO L226 Difference]: Without dead ends: 73 [2024-09-12 21:31:15,130 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-12 21:31:15,131 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:15,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 127 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-12 21:31:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-09-12 21:31:15,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.150943396226415) internal successors, (61), 54 states have internal predecessors, (61), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2024-09-12 21:31:15,140 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 49 [2024-09-12 21:31:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:15,140 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2024-09-12 21:31:15,140 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:31:15,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2024-09-12 21:31:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 21:31:15,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:15,141 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:15,157 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:15,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:15,342 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:15,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:15,342 INFO L85 PathProgramCache]: Analyzing trace with hash 931729655, now seen corresponding path program 9 times [2024-09-12 21:31:15,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:15,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854204275] [2024-09-12 21:31:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:15,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:15,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:15,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:31:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:15,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:31:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:15,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:31:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:15,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:31:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:15,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:31:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854204275] [2024-09-12 21:31:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854204275] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351158467] [2024-09-12 21:31:15,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:15,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:15,535 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:15,536 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 21:31:15,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 21:31:15,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:15,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 21:31:15,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:15,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351158467] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:16,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:16,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-09-12 21:31:16,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117025041] [2024-09-12 21:31:16,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:16,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 21:31:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 21:31:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 21:31:16,044 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:16,195 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-09-12 21:31:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 21:31:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-12 21:31:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:16,197 INFO L225 Difference]: With dead ends: 119 [2024-09-12 21:31:16,197 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 21:31:16,198 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 97 SyntacticMatches, 12 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 21:31:16,198 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:16,198 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 248 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 21:31:16,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70. [2024-09-12 21:31:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-12 21:31:16,207 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-12 21:31:16,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:16,207 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-12 21:31:16,207 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:16,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-12 21:31:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 21:31:16,208 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:16,208 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:16,221 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 21:31:16,409 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 21:31:16,409 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:16,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1164893834, now seen corresponding path program 7 times [2024-09-12 21:31:16,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:16,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511560851] [2024-09-12 21:31:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:16,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:31:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:31:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:31:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:31:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:31:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:16,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:16,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511560851] [2024-09-12 21:31:16,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511560851] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344867964] [2024-09-12 21:31:16,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:16,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:16,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:16,584 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:16,586 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 21:31:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:16,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 21:31:16,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:16,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:16,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344867964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:16,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:16,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-09-12 21:31:16,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819788647] [2024-09-12 21:31:16,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:16,987 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 21:31:16,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:16,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 21:31:16,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2024-09-12 21:31:16,988 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:17,108 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2024-09-12 21:31:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 21:31:17,110 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-12 21:31:17,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:17,111 INFO L225 Difference]: With dead ends: 123 [2024-09-12 21:31:17,112 INFO L226 Difference]: Without dead ends: 97 [2024-09-12 21:31:17,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 21:31:17,113 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:17,113 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 212 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-12 21:31:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2024-09-12 21:31:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:17,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-12 21:31:17,129 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-12 21:31:17,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:17,129 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-12 21:31:17,129 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:17,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-12 21:31:17,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 21:31:17,130 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:17,130 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:17,143 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:17,333 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:17,333 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:17,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash -401242857, now seen corresponding path program 8 times [2024-09-12 21:31:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450176147] [2024-09-12 21:31:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:17,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:17,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:31:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:17,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:31:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:17,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:31:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:17,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:31:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:17,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:31:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450176147] [2024-09-12 21:31:17,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450176147] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:17,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620096308] [2024-09-12 21:31:17,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:17,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:17,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:17,507 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:17,508 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 21:31:17,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:17,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:17,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 21:31:17,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:17,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:17,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620096308] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:17,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:17,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2024-09-12 21:31:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348101643] [2024-09-12 21:31:17,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:17,872 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 21:31:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 21:31:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:31:17,873 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:18,001 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2024-09-12 21:31:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 21:31:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-12 21:31:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:18,003 INFO L225 Difference]: With dead ends: 125 [2024-09-12 21:31:18,003 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 21:31:18,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-09-12 21:31:18,004 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:18,004 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 256 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 21:31:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2024-09-12 21:31:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-12 21:31:18,014 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-12 21:31:18,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:18,014 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-12 21:31:18,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:18,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-12 21:31:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 21:31:18,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:18,015 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:18,029 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:18,215 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 21:31:18,215 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:18,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:18,216 INFO L85 PathProgramCache]: Analyzing trace with hash 177580374, now seen corresponding path program 9 times [2024-09-12 21:31:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497010862] [2024-09-12 21:31:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:18,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:18,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:31:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:18,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:31:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:18,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:31:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:18,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:31:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:18,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:31:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:18,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:18,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497010862] [2024-09-12 21:31:18,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497010862] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:18,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536274118] [2024-09-12 21:31:18,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:18,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:18,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:18,400 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:18,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 21:31:18,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 21:31:18,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:18,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 21:31:18,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:18,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536274118] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:18,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:18,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 30 [2024-09-12 21:31:18,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053076051] [2024-09-12 21:31:18,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:18,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 21:31:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 21:31:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-09-12 21:31:18,782 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:18,893 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2024-09-12 21:31:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 21:31:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-12 21:31:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:18,894 INFO L225 Difference]: With dead ends: 125 [2024-09-12 21:31:18,894 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 21:31:18,895 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 100 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:31:18,895 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:18,896 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 210 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 21:31:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2024-09-12 21:31:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-12 21:31:18,907 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-12 21:31:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:18,907 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-12 21:31:18,908 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:18,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-12 21:31:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 21:31:18,908 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:18,908 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:18,925 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:19,112 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 21:31:19,113 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:19,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 57704759, now seen corresponding path program 10 times [2024-09-12 21:31:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:19,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463331623] [2024-09-12 21:31:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:31:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:31:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:31:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:31:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:31:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463331623] [2024-09-12 21:31:19,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463331623] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756626587] [2024-09-12 21:31:19,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:19,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:19,283 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:19,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 21:31:19,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:19,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:19,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 21:31:19,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:19,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756626587] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:19,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:19,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 29 [2024-09-12 21:31:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681709896] [2024-09-12 21:31:19,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:19,664 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 21:31:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 21:31:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2024-09-12 21:31:19,665 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:19,777 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2024-09-12 21:31:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 21:31:19,777 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-12 21:31:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:19,778 INFO L225 Difference]: With dead ends: 123 [2024-09-12 21:31:19,778 INFO L226 Difference]: Without dead ends: 97 [2024-09-12 21:31:19,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 101 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2024-09-12 21:31:19,779 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:19,780 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 219 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-12 21:31:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2024-09-12 21:31:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-12 21:31:19,792 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-12 21:31:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:19,792 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-12 21:31:19,792 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:19,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-12 21:31:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 21:31:19,793 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:19,793 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:19,809 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:19,993 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 21:31:19,993 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:19,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1747277514, now seen corresponding path program 5 times [2024-09-12 21:31:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:19,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529030476] [2024-09-12 21:31:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:19,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:31:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:31:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:31:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:31:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:31:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529030476] [2024-09-12 21:31:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529030476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252442475] [2024-09-12 21:31:20,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:20,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:20,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:20,154 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:20,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 21:31:20,203 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 21:31:20,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:20,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 21:31:20,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:20,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252442475] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:20,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:20,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-09-12 21:31:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540852658] [2024-09-12 21:31:20,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:20,509 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 21:31:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 21:31:20,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:31:20,511 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:20,637 INFO L93 Difference]: Finished difference Result 122 states and 143 transitions. [2024-09-12 21:31:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 21:31:20,638 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-12 21:31:20,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:20,639 INFO L225 Difference]: With dead ends: 122 [2024-09-12 21:31:20,639 INFO L226 Difference]: Without dead ends: 96 [2024-09-12 21:31:20,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 102 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-09-12 21:31:20,640 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:20,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 189 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-12 21:31:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2024-09-12 21:31:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 57 states have internal predecessors, (65), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2024-09-12 21:31:20,652 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 56 [2024-09-12 21:31:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:20,652 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2024-09-12 21:31:20,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:31:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2024-09-12 21:31:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 21:31:20,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:20,653 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:20,670 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:20,856 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 21:31:20,856 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:20,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1189232738, now seen corresponding path program 10 times [2024-09-12 21:31:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:20,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982225115] [2024-09-12 21:31:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982225115] [2024-09-12 21:31:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982225115] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:20,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608633204] [2024-09-12 21:31:20,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:20,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:20,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:20,970 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:20,972 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 21:31:21,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:21,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:21,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:21,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:21,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:31:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608633204] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:21,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-12 21:31:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855684347] [2024-09-12 21:31:21,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:21,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 21:31:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 21:31:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 21:31:21,165 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:21,260 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2024-09-12 21:31:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 21:31:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 57 [2024-09-12 21:31:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:21,261 INFO L225 Difference]: With dead ends: 85 [2024-09-12 21:31:21,261 INFO L226 Difference]: Without dead ends: 83 [2024-09-12 21:31:21,261 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 117 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-12 21:31:21,262 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:21,262 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 181 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-12 21:31:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-12 21:31:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2024-09-12 21:31:21,274 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 57 [2024-09-12 21:31:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:21,274 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2024-09-12 21:31:21,274 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:31:21,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2024-09-12 21:31:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 21:31:21,275 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:21,275 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:21,291 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:21,475 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:21,475 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:21,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1762212170, now seen corresponding path program 11 times [2024-09-12 21:31:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233957435] [2024-09-12 21:31:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:31:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:21,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:21,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233957435] [2024-09-12 21:31:21,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233957435] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:21,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59444269] [2024-09-12 21:31:21,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:21,713 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:21,715 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 21:31:21,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-12 21:31:21,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:21,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:21,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:22,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59444269] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:22,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:22,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-09-12 21:31:22,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883111329] [2024-09-12 21:31:22,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:22,190 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 21:31:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 21:31:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:31:22,191 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:22,324 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2024-09-12 21:31:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:31:22,324 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-12 21:31:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:22,325 INFO L225 Difference]: With dead ends: 136 [2024-09-12 21:31:22,325 INFO L226 Difference]: Without dead ends: 107 [2024-09-12 21:31:22,326 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 14 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 21:31:22,326 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:22,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 183 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-12 21:31:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2024-09-12 21:31:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-12 21:31:22,341 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-12 21:31:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:22,342 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-12 21:31:22,342 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:22,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-12 21:31:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 21:31:22,343 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:22,343 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:22,358 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:22,543 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 21:31:22,544 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:22,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1726081077, now seen corresponding path program 11 times [2024-09-12 21:31:22,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:22,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762894769] [2024-09-12 21:31:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:22,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:31:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 53 proven. 32 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762894769] [2024-09-12 21:31:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762894769] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583328987] [2024-09-12 21:31:22,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:22,764 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:22,766 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 21:31:22,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-12 21:31:22,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:22,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:22,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:23,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583328987] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:23,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2024-09-12 21:31:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651321728] [2024-09-12 21:31:23,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:23,278 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 21:31:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 21:31:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 21:31:23,279 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 36 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:23,407 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2024-09-12 21:31:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:31:23,408 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-12 21:31:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:23,409 INFO L225 Difference]: With dead ends: 141 [2024-09-12 21:31:23,409 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 21:31:23,409 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:31:23,410 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:23,410 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 194 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 21:31:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2024-09-12 21:31:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-12 21:31:23,423 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-12 21:31:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:23,423 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-12 21:31:23,424 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:23,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-12 21:31:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 21:31:23,424 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:23,424 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:23,438 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:23,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 21:31:23,625 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:23,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2040718634, now seen corresponding path program 12 times [2024-09-12 21:31:23,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:23,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562710571] [2024-09-12 21:31:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:31:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:23,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:23,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562710571] [2024-09-12 21:31:23,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562710571] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:23,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868706815] [2024-09-12 21:31:23,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:23,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:23,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:23,809 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:23,810 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 21:31:23,848 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 21:31:23,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:23,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:23,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:24,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868706815] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:24,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:24,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 35 [2024-09-12 21:31:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950707606] [2024-09-12 21:31:24,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:24,234 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 21:31:24,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:24,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 21:31:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:31:24,235 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 35 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:24,405 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2024-09-12 21:31:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:31:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-12 21:31:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:24,406 INFO L225 Difference]: With dead ends: 144 [2024-09-12 21:31:24,406 INFO L226 Difference]: Without dead ends: 115 [2024-09-12 21:31:24,407 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 113 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 21:31:24,407 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:24,407 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 230 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-12 21:31:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2024-09-12 21:31:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-12 21:31:24,424 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-12 21:31:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:24,424 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-12 21:31:24,424 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:24,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-12 21:31:24,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 21:31:24,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:24,425 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:24,438 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:24,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:24,626 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:24,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1162907669, now seen corresponding path program 13 times [2024-09-12 21:31:24,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:24,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952183462] [2024-09-12 21:31:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:24,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:31:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 53 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952183462] [2024-09-12 21:31:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952183462] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868076679] [2024-09-12 21:31:24,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:24,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:24,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:24,848 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:24,849 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 21:31:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:24,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:24,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 69 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:25,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 69 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:25,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868076679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:25,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:25,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 34 [2024-09-12 21:31:25,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192077666] [2024-09-12 21:31:25,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:25,278 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 21:31:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:25,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 21:31:25,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 21:31:25,280 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:25,519 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2024-09-12 21:31:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:31:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-12 21:31:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:25,521 INFO L225 Difference]: With dead ends: 145 [2024-09-12 21:31:25,521 INFO L226 Difference]: Without dead ends: 116 [2024-09-12 21:31:25,521 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 114 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:31:25,522 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:25,522 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 229 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:31:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-12 21:31:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2024-09-12 21:31:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-12 21:31:25,541 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-12 21:31:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:25,541 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-12 21:31:25,541 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:25,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-12 21:31:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 21:31:25,542 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:25,543 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:25,559 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-12 21:31:25,743 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-12 21:31:25,744 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:25,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1920338186, now seen corresponding path program 14 times [2024-09-12 21:31:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916928718] [2024-09-12 21:31:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:31:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916928718] [2024-09-12 21:31:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916928718] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280894139] [2024-09-12 21:31:25,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:25,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:25,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:25,951 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:25,952 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 21:31:25,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:25,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:25,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:25,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:26,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280894139] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:26,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 33 [2024-09-12 21:31:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139173497] [2024-09-12 21:31:26,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:26,430 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 21:31:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 21:31:26,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 21:31:26,431 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:26,571 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2024-09-12 21:31:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:31:26,572 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-12 21:31:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:26,573 INFO L225 Difference]: With dead ends: 144 [2024-09-12 21:31:26,573 INFO L226 Difference]: Without dead ends: 115 [2024-09-12 21:31:26,573 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 115 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 21:31:26,574 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:26,574 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 217 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-12 21:31:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2024-09-12 21:31:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-12 21:31:26,587 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-12 21:31:26,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:26,587 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-12 21:31:26,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:26,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-12 21:31:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 21:31:26,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:26,588 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:26,602 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:26,789 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:26,789 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:26,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 889696245, now seen corresponding path program 15 times [2024-09-12 21:31:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854069056] [2024-09-12 21:31:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:31:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 53 proven. 32 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854069056] [2024-09-12 21:31:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854069056] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694151228] [2024-09-12 21:31:26,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:26,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:26,969 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:26,970 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 21:31:27,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-12 21:31:27,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:27,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:27,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:27,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:27,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694151228] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:27,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:27,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 32 [2024-09-12 21:31:27,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049284312] [2024-09-12 21:31:27,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:27,358 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 21:31:27,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 21:31:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2024-09-12 21:31:27,359 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:27,510 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2024-09-12 21:31:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:31:27,510 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-12 21:31:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:27,511 INFO L225 Difference]: With dead ends: 141 [2024-09-12 21:31:27,511 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 21:31:27,511 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 21:31:27,512 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:27,512 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 21:31:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2024-09-12 21:31:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-12 21:31:27,528 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-12 21:31:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:27,528 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-12 21:31:27,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:27,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-12 21:31:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 21:31:27,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:27,530 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:27,545 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:27,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 21:31:27,730 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:27,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:27,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2088721174, now seen corresponding path program 6 times [2024-09-12 21:31:27,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:27,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494217975] [2024-09-12 21:31:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:27,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:31:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:31:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:31:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:31:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:31:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:31:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:27,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494217975] [2024-09-12 21:31:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494217975] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591895302] [2024-09-12 21:31:27,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:27,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:27,931 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:27,933 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-12 21:31:27,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 21:31:27,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:27,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 21:31:27,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:28,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:28,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591895302] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:28,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:28,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 31 [2024-09-12 21:31:28,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605282456] [2024-09-12 21:31:28,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:28,412 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 21:31:28,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:28,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 21:31:28,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:31:28,413 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:28,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:28,529 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2024-09-12 21:31:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:31:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-12 21:31:28,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:28,530 INFO L225 Difference]: With dead ends: 139 [2024-09-12 21:31:28,530 INFO L226 Difference]: Without dead ends: 110 [2024-09-12 21:31:28,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 117 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2024-09-12 21:31:28,531 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:28,531 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 201 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:28,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-09-12 21:31:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2024-09-12 21:31:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.15625) internal successors, (74), 65 states have internal predecessors, (74), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-09-12 21:31:28,546 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 64 [2024-09-12 21:31:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:28,547 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-09-12 21:31:28,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:31:28,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-09-12 21:31:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 21:31:28,547 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:28,547 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:28,558 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:28,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 21:31:28,748 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:28,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash -968139999, now seen corresponding path program 12 times [2024-09-12 21:31:28,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:28,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651215580] [2024-09-12 21:31:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651215580] [2024-09-12 21:31:28,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651215580] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277348074] [2024-09-12 21:31:28,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:28,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:28,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:28,883 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:28,890 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-12 21:31:28,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 21:31:28,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:28,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:28,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:29,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:31:29,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277348074] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:29,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:29,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-12 21:31:29,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326879701] [2024-09-12 21:31:29,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:29,109 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 21:31:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 21:31:29,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-12 21:31:29,109 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:29,190 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-09-12 21:31:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 21:31:29,190 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 65 [2024-09-12 21:31:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:29,191 INFO L225 Difference]: With dead ends: 95 [2024-09-12 21:31:29,191 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 21:31:29,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-12 21:31:29,192 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:29,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 175 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 21:31:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2024-09-12 21:31:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2024-09-12 21:31:29,211 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 65 [2024-09-12 21:31:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:29,211 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2024-09-12 21:31:29,211 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:31:29,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2024-09-12 21:31:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:29,212 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:29,212 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:29,229 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:29,416 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 21:31:29,417 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:29,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -16980201, now seen corresponding path program 13 times [2024-09-12 21:31:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:29,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327120880] [2024-09-12 21:31:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:29,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:29,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327120880] [2024-09-12 21:31:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327120880] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955486414] [2024-09-12 21:31:29,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:29,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:29,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:29,652 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:29,653 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-12 21:31:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:29,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:29,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:30,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:30,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955486414] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:30,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:30,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-09-12 21:31:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726312324] [2024-09-12 21:31:30,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:30,269 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 21:31:30,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 21:31:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:31:30,270 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 41 states have internal predecessors, (70), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:30,496 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2024-09-12 21:31:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 41 states have internal predecessors, (70), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:30,498 INFO L225 Difference]: With dead ends: 153 [2024-09-12 21:31:30,498 INFO L226 Difference]: Without dead ends: 121 [2024-09-12 21:31:30,498 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=325, Invalid=1397, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 21:31:30,500 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:30,500 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 308 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:31:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-09-12 21:31:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 90. [2024-09-12 21:31:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-12 21:31:30,522 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-12 21:31:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:30,522 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-12 21:31:30,522 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 41 states have internal predecessors, (70), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:30,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-12 21:31:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:30,523 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:30,523 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:30,541 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:30,724 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 21:31:30,724 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:30,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash 338303382, now seen corresponding path program 16 times [2024-09-12 21:31:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:30,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679604526] [2024-09-12 21:31:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:30,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 72 proven. 41 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:30,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:30,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679604526] [2024-09-12 21:31:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679604526] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:30,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703590623] [2024-09-12 21:31:30,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:30,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:30,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:30,938 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:30,942 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-12 21:31:30,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:30,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:30,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:30,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:31,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703590623] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:31,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:31,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-09-12 21:31:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532921231] [2024-09-12 21:31:31,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:31,470 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 21:31:31,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 21:31:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 21:31:31,471 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:31,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:31,651 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2024-09-12 21:31:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:31,651 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:31,652 INFO L225 Difference]: With dead ends: 159 [2024-09-12 21:31:31,652 INFO L226 Difference]: Without dead ends: 127 [2024-09-12 21:31:31,653 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=1340, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:31:31,653 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:31,654 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 278 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-12 21:31:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 90. [2024-09-12 21:31:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-12 21:31:31,678 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-12 21:31:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:31,679 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-12 21:31:31,679 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:31,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-12 21:31:31,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:31,680 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:31,680 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:31,692 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:31,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:31,880 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:31,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 626858807, now seen corresponding path program 17 times [2024-09-12 21:31:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:31,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882291223] [2024-09-12 21:31:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 72 proven. 37 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882291223] [2024-09-12 21:31:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882291223] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331070092] [2024-09-12 21:31:32,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:32,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:32,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:32,080 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:32,082 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-12 21:31:32,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-12 21:31:32,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:32,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:32,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:32,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:32,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331070092] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:32,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:32,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 39 [2024-09-12 21:31:32,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458773618] [2024-09-12 21:31:32,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:32,595 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 21:31:32,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 21:31:32,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 21:31:32,596 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:32,724 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2024-09-12 21:31:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:32,724 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:32,725 INFO L225 Difference]: With dead ends: 163 [2024-09-12 21:31:32,725 INFO L226 Difference]: Without dead ends: 131 [2024-09-12 21:31:32,726 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 127 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 21:31:32,726 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:32,727 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 172 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-12 21:31:32,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2024-09-12 21:31:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-12 21:31:32,750 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-12 21:31:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:32,751 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-12 21:31:32,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:32,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:32,751 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-12 21:31:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:32,752 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:32,752 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:32,768 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-12 21:31:32,952 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 21:31:32,952 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:32,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash 81977718, now seen corresponding path program 18 times [2024-09-12 21:31:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:32,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13669478] [2024-09-12 21:31:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 72 proven. 35 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:33,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13669478] [2024-09-12 21:31:33,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13669478] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057241810] [2024-09-12 21:31:33,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:33,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:33,147 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:33,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-12 21:31:33,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-12 21:31:33,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:33,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:33,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:33,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057241810] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:33,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:33,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 38 [2024-09-12 21:31:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107450974] [2024-09-12 21:31:33,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:33,725 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 21:31:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 21:31:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 21:31:33,726 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:33,895 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2024-09-12 21:31:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:33,895 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:33,896 INFO L225 Difference]: With dead ends: 165 [2024-09-12 21:31:33,896 INFO L226 Difference]: Without dead ends: 133 [2024-09-12 21:31:33,897 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 21:31:33,897 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:33,897 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 242 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-12 21:31:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 90. [2024-09-12 21:31:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-12 21:31:33,914 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-12 21:31:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:33,915 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-12 21:31:33,915 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:33,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-12 21:31:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:33,915 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:33,915 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:33,927 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:34,116 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 21:31:34,116 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:34,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1736714409, now seen corresponding path program 19 times [2024-09-12 21:31:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273682246] [2024-09-12 21:31:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 72 proven. 35 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273682246] [2024-09-12 21:31:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273682246] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931156476] [2024-09-12 21:31:34,351 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:34,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:34,352 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:34,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-12 21:31:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:34,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:34,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:34,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931156476] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:34,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:34,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 37 [2024-09-12 21:31:34,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371541622] [2024-09-12 21:31:34,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:34,821 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 21:31:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 21:31:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1091, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:31:34,822 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 37 states have internal predecessors, (66), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:35,009 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2024-09-12 21:31:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 37 states have internal predecessors, (66), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:35,010 INFO L225 Difference]: With dead ends: 165 [2024-09-12 21:31:35,010 INFO L226 Difference]: Without dead ends: 133 [2024-09-12 21:31:35,010 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 21:31:35,011 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:35,011 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 194 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-12 21:31:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 90. [2024-09-12 21:31:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-12 21:31:35,037 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-12 21:31:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:35,037 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-12 21:31:35,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 37 states have internal predecessors, (66), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:35,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-12 21:31:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:35,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:35,038 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:35,054 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:35,238 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 21:31:35,239 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:35,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1391206742, now seen corresponding path program 20 times [2024-09-12 21:31:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854799771] [2024-09-12 21:31:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 72 proven. 37 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854799771] [2024-09-12 21:31:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854799771] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238585912] [2024-09-12 21:31:35,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:35,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:35,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:35,435 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:35,436 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-12 21:31:35,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:35,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:35,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:35,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:35,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238585912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:35,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:35,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 36 [2024-09-12 21:31:35,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729070880] [2024-09-12 21:31:35,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:35,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 21:31:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 21:31:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 21:31:35,910 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 36 states have internal predecessors, (65), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:36,074 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2024-09-12 21:31:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 36 states have internal predecessors, (65), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:36,076 INFO L225 Difference]: With dead ends: 163 [2024-09-12 21:31:36,076 INFO L226 Difference]: Without dead ends: 131 [2024-09-12 21:31:36,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:31:36,076 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:36,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 262 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:36,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-12 21:31:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2024-09-12 21:31:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-12 21:31:36,095 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-12 21:31:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:36,095 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-12 21:31:36,095 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 36 states have internal predecessors, (65), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:36,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-12 21:31:36,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:36,096 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:36,096 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:36,112 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:36,296 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-09-12 21:31:36,297 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:36,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash 106634103, now seen corresponding path program 21 times [2024-09-12 21:31:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:36,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097493079] [2024-09-12 21:31:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:36,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 72 proven. 41 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:36,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:36,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097493079] [2024-09-12 21:31:36,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097493079] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:36,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551154118] [2024-09-12 21:31:36,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:36,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:36,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:36,476 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:36,482 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-12 21:31:36,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-12 21:31:36,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:36,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:36,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:36,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551154118] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:36,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:36,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 35 [2024-09-12 21:31:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809930354] [2024-09-12 21:31:36,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:36,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 21:31:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 21:31:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:31:36,962 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:37,124 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2024-09-12 21:31:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:37,125 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:37,128 INFO L225 Difference]: With dead ends: 159 [2024-09-12 21:31:37,128 INFO L226 Difference]: Without dead ends: 127 [2024-09-12 21:31:37,129 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 131 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 21:31:37,129 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:37,129 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 234 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-12 21:31:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 90. [2024-09-12 21:31:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-12 21:31:37,158 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-12 21:31:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:37,158 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-12 21:31:37,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:37,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-12 21:31:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 21:31:37,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:37,159 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:37,175 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:37,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:37,364 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:37,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2013013706, now seen corresponding path program 7 times [2024-09-12 21:31:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:37,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672471864] [2024-09-12 21:31:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:37,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:31:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:31:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:31:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:31:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:31:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:31:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:31:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:37,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672471864] [2024-09-12 21:31:37,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672471864] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:37,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052392735] [2024-09-12 21:31:37,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:37,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:37,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:37,600 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:37,602 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-12 21:31:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:37,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:31:37,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:37,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052392735] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:38,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:38,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2024-09-12 21:31:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971400089] [2024-09-12 21:31:38,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:38,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 21:31:38,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:38,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 21:31:38,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 21:31:38,109 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 34 states have internal predecessors, (63), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:38,319 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2024-09-12 21:31:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:31:38,319 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 34 states have internal predecessors, (63), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-12 21:31:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:38,321 INFO L225 Difference]: With dead ends: 156 [2024-09-12 21:31:38,321 INFO L226 Difference]: Without dead ends: 124 [2024-09-12 21:31:38,321 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 132 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:31:38,324 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:38,325 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 295 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-09-12 21:31:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2024-09-12 21:31:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 73 states have internal predecessors, (83), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2024-09-12 21:31:38,353 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 72 [2024-09-12 21:31:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:38,355 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2024-09-12 21:31:38,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 34 states have internal predecessors, (63), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:31:38,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2024-09-12 21:31:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-12 21:31:38,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:38,356 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:38,372 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-12 21:31:38,557 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:38,557 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:38,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 588767362, now seen corresponding path program 14 times [2024-09-12 21:31:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805739275] [2024-09-12 21:31:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:38,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:38,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805739275] [2024-09-12 21:31:38,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805739275] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:38,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163610] [2024-09-12 21:31:38,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:38,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:38,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:38,681 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:38,682 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-12 21:31:38,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:38,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:38,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 21:31:38,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:38,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:31:38,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163610] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:38,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:38,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-12 21:31:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775953981] [2024-09-12 21:31:38,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:38,890 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 21:31:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 21:31:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-12 21:31:38,891 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:38,982 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-09-12 21:31:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 21:31:38,983 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 73 [2024-09-12 21:31:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:38,984 INFO L225 Difference]: With dead ends: 105 [2024-09-12 21:31:38,984 INFO L226 Difference]: Without dead ends: 103 [2024-09-12 21:31:38,984 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 149 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-12 21:31:38,984 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:38,984 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 207 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-12 21:31:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2024-09-12 21:31:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 78 states have internal predecessors, (88), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2024-09-12 21:31:39,015 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 73 [2024-09-12 21:31:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:39,015 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2024-09-12 21:31:39,015 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:31:39,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2024-09-12 21:31:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:39,016 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:39,016 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:39,035 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:39,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-09-12 21:31:39,217 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:39,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1028833942, now seen corresponding path program 15 times [2024-09-12 21:31:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132316682] [2024-09-12 21:31:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132316682] [2024-09-12 21:31:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132316682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916077362] [2024-09-12 21:31:39,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:39,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:39,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:39,495 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:39,497 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-12 21:31:39,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-12 21:31:39,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:39,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:39,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:39,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916077362] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:40,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:40,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-09-12 21:31:40,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823499785] [2024-09-12 21:31:40,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:40,192 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 21:31:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:40,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 21:31:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 21:31:40,193 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:40,384 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2024-09-12 21:31:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:40,385 INFO L225 Difference]: With dead ends: 170 [2024-09-12 21:31:40,386 INFO L226 Difference]: Without dead ends: 135 [2024-09-12 21:31:40,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 18 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:31:40,386 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:40,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:40,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-12 21:31:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 100. [2024-09-12 21:31:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:40,410 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:40,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:40,411 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:40,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:40,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:40,411 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:40,411 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:40,423 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-12 21:31:40,612 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-12 21:31:40,612 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1054800363, now seen corresponding path program 22 times [2024-09-12 21:31:40,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:40,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317824266] [2024-09-12 21:31:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:40,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:40,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317824266] [2024-09-12 21:31:40,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317824266] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:40,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601241139] [2024-09-12 21:31:40,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:40,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:40,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:40,825 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:40,827 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-12 21:31:40,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:40,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:40,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:40,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:41,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:41,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601241139] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:41,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:41,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2024-09-12 21:31:41,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093493533] [2024-09-12 21:31:41,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:41,506 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 21:31:41,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 21:31:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:31:41,507 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:41,681 INFO L93 Difference]: Finished difference Result 177 states and 206 transitions. [2024-09-12 21:31:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:41,681 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:41,682 INFO L225 Difference]: With dead ends: 177 [2024-09-12 21:31:41,682 INFO L226 Difference]: Without dead ends: 142 [2024-09-12 21:31:41,683 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 18 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=361, Invalid=1619, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 21:31:41,683 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:41,683 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 258 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-12 21:31:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2024-09-12 21:31:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:41,711 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:41,711 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:41,711 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:41,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:41,712 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:41,712 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:41,724 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:41,912 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:41,913 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:41,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1926026934, now seen corresponding path program 23 times [2024-09-12 21:31:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654963857] [2024-09-12 21:31:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:42,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654963857] [2024-09-12 21:31:42,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654963857] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703015465] [2024-09-12 21:31:42,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:42,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:42,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:42,123 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:42,124 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-12 21:31:42,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-09-12 21:31:42,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:42,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:42,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:42,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:42,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703015465] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:42,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:42,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 43 [2024-09-12 21:31:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899401640] [2024-09-12 21:31:42,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:42,694 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 21:31:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 21:31:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1477, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:31:42,696 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:42,919 INFO L93 Difference]: Finished difference Result 182 states and 211 transitions. [2024-09-12 21:31:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:42,919 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:42,920 INFO L225 Difference]: With dead ends: 182 [2024-09-12 21:31:42,920 INFO L226 Difference]: Without dead ends: 147 [2024-09-12 21:31:42,921 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:31:42,921 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:42,921 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 347 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-12 21:31:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 100. [2024-09-12 21:31:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:42,944 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:42,945 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:42,945 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:42,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:42,946 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:42,946 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:42,958 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-12 21:31:43,146 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:43,146 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:43,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:43,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1745087989, now seen corresponding path program 24 times [2024-09-12 21:31:43,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:43,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466946693] [2024-09-12 21:31:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:43,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 94 proven. 43 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:43,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466946693] [2024-09-12 21:31:43,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466946693] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854801161] [2024-09-12 21:31:43,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:43,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:43,379 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:43,381 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-12 21:31:43,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-09-12 21:31:43,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:43,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:43,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:43,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:43,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854801161] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:43,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:43,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 42 [2024-09-12 21:31:43,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497278340] [2024-09-12 21:31:43,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:43,938 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-12 21:31:43,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-12 21:31:43,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 21:31:43,939 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 42 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:44,153 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2024-09-12 21:31:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:44,154 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:44,155 INFO L225 Difference]: With dead ends: 185 [2024-09-12 21:31:44,155 INFO L226 Difference]: Without dead ends: 150 [2024-09-12 21:31:44,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 142 SyntacticMatches, 18 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=1489, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:31:44,156 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:44,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 310 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:44,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-12 21:31:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 100. [2024-09-12 21:31:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:44,191 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:44,191 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:44,191 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:44,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:44,191 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:44,192 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:44,204 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:44,392 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-09-12 21:31:44,392 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:44,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:44,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1308790058, now seen corresponding path program 25 times [2024-09-12 21:31:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:44,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274069612] [2024-09-12 21:31:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:44,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 94 proven. 42 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274069612] [2024-09-12 21:31:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274069612] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753382647] [2024-09-12 21:31:44,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:44,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:44,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:44,654 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:44,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-12 21:31:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:44,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:44,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:45,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:45,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753382647] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:45,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:45,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 41 [2024-09-12 21:31:45,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072173233] [2024-09-12 21:31:45,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:45,206 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 21:31:45,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:45,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 21:31:45,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1347, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:31:45,207 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:45,440 INFO L93 Difference]: Finished difference Result 186 states and 215 transitions. [2024-09-12 21:31:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:45,442 INFO L225 Difference]: With dead ends: 186 [2024-09-12 21:31:45,442 INFO L226 Difference]: Without dead ends: 151 [2024-09-12 21:31:45,442 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 143 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1421, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 21:31:45,442 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:45,442 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 321 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-09-12 21:31:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 100. [2024-09-12 21:31:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:45,475 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:45,476 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:45,476 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:45,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:45,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:45,476 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:45,488 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-12 21:31:45,677 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-12 21:31:45,677 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:45,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 809455061, now seen corresponding path program 26 times [2024-09-12 21:31:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:45,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063425407] [2024-09-12 21:31:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 94 proven. 43 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:45,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063425407] [2024-09-12 21:31:45,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063425407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:45,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133941518] [2024-09-12 21:31:45,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:45,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:45,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:45,901 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:45,902 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-12 21:31:45,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:45,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:45,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:45,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:46,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133941518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:46,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:46,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 40 [2024-09-12 21:31:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113184809] [2024-09-12 21:31:46,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:46,433 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 21:31:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 21:31:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 21:31:46,434 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 40 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:46,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:46,679 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2024-09-12 21:31:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:46,679 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:46,680 INFO L225 Difference]: With dead ends: 185 [2024-09-12 21:31:46,681 INFO L226 Difference]: Without dead ends: 150 [2024-09-12 21:31:46,681 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 144 SyntacticMatches, 18 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:31:46,681 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:46,681 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 229 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-12 21:31:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 100. [2024-09-12 21:31:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:46,718 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:46,718 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:46,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:46,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:46,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:46,719 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:46,731 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:46,919 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-12 21:31:46,919 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:46,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2031708426, now seen corresponding path program 27 times [2024-09-12 21:31:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:46,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584500879] [2024-09-12 21:31:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:47,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584500879] [2024-09-12 21:31:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584500879] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158374620] [2024-09-12 21:31:47,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:47,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:47,119 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:47,120 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-12 21:31:47,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-12 21:31:47,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:47,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:47,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:47,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:47,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158374620] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:47,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:47,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 39 [2024-09-12 21:31:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797548939] [2024-09-12 21:31:47,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:47,650 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 21:31:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 21:31:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 21:31:47,651 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:47,856 INFO L93 Difference]: Finished difference Result 182 states and 211 transitions. [2024-09-12 21:31:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:47,858 INFO L225 Difference]: With dead ends: 182 [2024-09-12 21:31:47,858 INFO L226 Difference]: Without dead ends: 147 [2024-09-12 21:31:47,858 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 21:31:47,858 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:47,858 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 264 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-12 21:31:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 100. [2024-09-12 21:31:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:47,908 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:47,908 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:47,908 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:47,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:47,909 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:47,909 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:47,920 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:48,109 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-09-12 21:31:48,109 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:48,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash 93398453, now seen corresponding path program 28 times [2024-09-12 21:31:48,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:48,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789306157] [2024-09-12 21:31:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:48,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:48,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789306157] [2024-09-12 21:31:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789306157] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325590119] [2024-09-12 21:31:48,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:48,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:48,311 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:48,311 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-12 21:31:48,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:48,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:48,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:48,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:48,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:48,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325590119] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:48,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:48,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 38 [2024-09-12 21:31:48,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128284030] [2024-09-12 21:31:48,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:48,897 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 21:31:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 21:31:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 21:31:48,898 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:49,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:49,115 INFO L93 Difference]: Finished difference Result 177 states and 206 transitions. [2024-09-12 21:31:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:49,116 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:49,117 INFO L225 Difference]: With dead ends: 177 [2024-09-12 21:31:49,117 INFO L226 Difference]: Without dead ends: 142 [2024-09-12 21:31:49,117 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 146 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 21:31:49,118 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:49,118 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 286 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-12 21:31:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2024-09-12 21:31:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-12 21:31:49,156 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-12 21:31:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:49,156 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-12 21:31:49,156 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:49,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-12 21:31:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 21:31:49,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:49,157 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:49,173 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:49,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:49,358 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:49,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1777712362, now seen corresponding path program 8 times [2024-09-12 21:31:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:49,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38085176] [2024-09-12 21:31:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:31:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:31:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:31:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:31:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:31:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:31:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:31:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:31:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38085176] [2024-09-12 21:31:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38085176] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399760737] [2024-09-12 21:31:49,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:49,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:49,562 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:49,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-12 21:31:49,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:49,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:49,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:31:49,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:49,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:50,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399760737] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:50,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:50,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 37 [2024-09-12 21:31:50,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544783582] [2024-09-12 21:31:50,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:50,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 21:31:50,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 21:31:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:31:50,053 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:50,233 INFO L93 Difference]: Finished difference Result 173 states and 203 transitions. [2024-09-12 21:31:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:31:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-12 21:31:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:50,235 INFO L225 Difference]: With dead ends: 173 [2024-09-12 21:31:50,235 INFO L226 Difference]: Without dead ends: 138 [2024-09-12 21:31:50,235 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 147 SyntacticMatches, 18 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 21:31:50,236 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:50,236 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 257 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-09-12 21:31:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 102. [2024-09-12 21:31:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.15) internal successors, (92), 81 states have internal predecessors, (92), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:31:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2024-09-12 21:31:50,274 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 80 [2024-09-12 21:31:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:50,274 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2024-09-12 21:31:50,275 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:31:50,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2024-09-12 21:31:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-12 21:31:50,276 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:50,276 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:50,289 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-12 21:31:50,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:50,476 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:50,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:50,477 INFO L85 PathProgramCache]: Analyzing trace with hash 805249281, now seen corresponding path program 16 times [2024-09-12 21:31:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579371475] [2024-09-12 21:31:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:50,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579371475] [2024-09-12 21:31:50,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579371475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995700719] [2024-09-12 21:31:50,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:31:50,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:50,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:50,603 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:50,605 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-12 21:31:50,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:31:50,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:50,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:31:50,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:50,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:31:50,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995700719] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:50,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:50,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-12 21:31:50,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725721927] [2024-09-12 21:31:50,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:50,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 21:31:50,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 21:31:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-12 21:31:50,832 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:50,945 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2024-09-12 21:31:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:31:50,945 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 81 [2024-09-12 21:31:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:50,946 INFO L225 Difference]: With dead ends: 115 [2024-09-12 21:31:50,946 INFO L226 Difference]: Without dead ends: 113 [2024-09-12 21:31:50,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 168 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-12 21:31:50,946 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:50,946 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 249 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-12 21:31:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2024-09-12 21:31:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 86 states have internal predecessors, (97), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:31:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2024-09-12 21:31:50,978 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 81 [2024-09-12 21:31:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:50,978 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2024-09-12 21:31:50,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:31:50,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2024-09-12 21:31:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:31:50,979 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:50,979 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:50,991 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:51,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:51,180 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:51,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash 41469239, now seen corresponding path program 17 times [2024-09-12 21:31:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:51,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270712541] [2024-09-12 21:31:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:51,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270712541] [2024-09-12 21:31:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270712541] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013318080] [2024-09-12 21:31:51,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:51,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:51,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:51,423 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:51,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-12 21:31:51,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-12 21:31:51,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:51,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:31:51,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:51,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:52,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013318080] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:52,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:52,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-09-12 21:31:52,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982130948] [2024-09-12 21:31:52,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:52,110 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 21:31:52,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:52,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 21:31:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1901, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:31:52,111 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 49 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 49 states have internal predecessors, (82), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:52,354 INFO L93 Difference]: Finished difference Result 187 states and 219 transitions. [2024-09-12 21:31:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:31:52,354 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 49 states have internal predecessors, (82), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:31:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:52,355 INFO L225 Difference]: With dead ends: 187 [2024-09-12 21:31:52,355 INFO L226 Difference]: Without dead ends: 149 [2024-09-12 21:31:52,355 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 153 SyntacticMatches, 20 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:31:52,356 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:52,356 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 235 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-12 21:31:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 110. [2024-09-12 21:31:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:31:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:31:52,386 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:31:52,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:52,386 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:31:52,386 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 49 states have internal predecessors, (82), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:52,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:31:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:31:52,387 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:52,387 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:52,399 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-09-12 21:31:52,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:52,587 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:52,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1330059702, now seen corresponding path program 29 times [2024-09-12 21:31:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:52,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22798444] [2024-09-12 21:31:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:52,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 119 proven. 62 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:52,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:52,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22798444] [2024-09-12 21:31:52,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22798444] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:52,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266160980] [2024-09-12 21:31:52,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:31:52,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:52,829 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:52,830 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-12 21:31:52,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-12 21:31:52,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:52,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:31:52,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:53,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:53,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266160980] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:53,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:53,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-09-12 21:31:53,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439442817] [2024-09-12 21:31:53,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:53,502 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 21:31:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 21:31:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:31:53,503 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:53,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:53,789 INFO L93 Difference]: Finished difference Result 195 states and 227 transitions. [2024-09-12 21:31:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:31:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:31:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:53,791 INFO L225 Difference]: With dead ends: 195 [2024-09-12 21:31:53,791 INFO L226 Difference]: Without dead ends: 157 [2024-09-12 21:31:53,791 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 154 SyntacticMatches, 20 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1924, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:31:53,791 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:53,792 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 273 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-12 21:31:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2024-09-12 21:31:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:31:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:31:53,839 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:31:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:53,839 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:31:53,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:53,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:31:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:31:53,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:53,841 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:53,856 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:54,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:54,041 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:54,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash -13846185, now seen corresponding path program 30 times [2024-09-12 21:31:54,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:54,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212087525] [2024-09-12 21:31:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 119 proven. 56 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:54,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:54,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212087525] [2024-09-12 21:31:54,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212087525] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:54,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286877559] [2024-09-12 21:31:54,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:31:54,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:54,310 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:54,310 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-12 21:31:54,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-12 21:31:54,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:54,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:31:54,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:54,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:54,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286877559] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:54,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:54,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 47 [2024-09-12 21:31:54,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702152971] [2024-09-12 21:31:54,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:54,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 21:31:54,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 21:31:54,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1769, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:31:54,969 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 47 states, 47 states have (on average 1.702127659574468) internal successors, (80), 47 states have internal predecessors, (80), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:55,221 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2024-09-12 21:31:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:31:55,222 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.702127659574468) internal successors, (80), 47 states have internal predecessors, (80), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:31:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:55,223 INFO L225 Difference]: With dead ends: 201 [2024-09-12 21:31:55,223 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 21:31:55,223 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 155 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=401, Invalid=1855, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:31:55,223 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:55,224 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 360 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 21:31:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 110. [2024-09-12 21:31:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:31:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:31:55,262 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:31:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:55,262 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:31:55,262 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.702127659574468) internal successors, (80), 47 states have internal predecessors, (80), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:55,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:31:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:31:55,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:55,263 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:55,275 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-12 21:31:55,463 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-09-12 21:31:55,463 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:55,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1882464662, now seen corresponding path program 31 times [2024-09-12 21:31:55,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:55,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918952135] [2024-09-12 21:31:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:55,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 119 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:55,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:55,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918952135] [2024-09-12 21:31:55,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918952135] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:55,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176117959] [2024-09-12 21:31:55,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:31:55,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:55,760 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:55,761 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-12 21:31:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:55,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:31:55,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:56,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176117959] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:56,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 46 [2024-09-12 21:31:56,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504788932] [2024-09-12 21:31:56,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:56,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 21:31:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 21:31:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:31:56,424 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 46 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:56,723 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2024-09-12 21:31:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:31:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:31:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:56,725 INFO L225 Difference]: With dead ends: 205 [2024-09-12 21:31:56,725 INFO L226 Difference]: Without dead ends: 167 [2024-09-12 21:31:56,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 156 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=378, Invalid=1784, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:31:56,726 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:56,726 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 351 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:31:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-12 21:31:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 110. [2024-09-12 21:31:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:31:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:31:56,764 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:31:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:56,764 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:31:56,764 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:56,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:31:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:31:56,765 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:56,765 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:56,776 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-12 21:31:56,965 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-12 21:31:56,965 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:56,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1250899319, now seen corresponding path program 32 times [2024-09-12 21:31:56,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873895909] [2024-09-12 21:31:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:56,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 119 proven. 50 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:57,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:57,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873895909] [2024-09-12 21:31:57,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873895909] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:57,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445593243] [2024-09-12 21:31:57,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:31:57,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:57,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:57,269 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:57,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-12 21:31:57,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:31:57,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:57,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:31:57,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:57,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:57,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445593243] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:57,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:57,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 45 [2024-09-12 21:31:57,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749352223] [2024-09-12 21:31:57,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:57,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 21:31:57,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:57,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 21:31:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1629, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 21:31:57,978 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 45 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 45 states have internal predecessors, (78), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:58,239 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2024-09-12 21:31:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:31:58,240 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 45 states have internal predecessors, (78), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:31:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:58,241 INFO L225 Difference]: With dead ends: 207 [2024-09-12 21:31:58,241 INFO L226 Difference]: Without dead ends: 169 [2024-09-12 21:31:58,241 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 157 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=359, Invalid=1711, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:31:58,241 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:58,241 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 240 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-12 21:31:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 110. [2024-09-12 21:31:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:31:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:31:58,294 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:31:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:58,294 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:31:58,294 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 45 states have internal predecessors, (78), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:58,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:31:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:31:58,295 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:58,295 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:58,311 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-09-12 21:31:58,499 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-12 21:31:58,500 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:58,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash -293494410, now seen corresponding path program 33 times [2024-09-12 21:31:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:58,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804432980] [2024-09-12 21:31:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:31:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:31:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:31:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:31:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:31:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:31:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:31:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:31:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:31:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:31:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:31:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 119 proven. 50 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:58,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:31:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804432980] [2024-09-12 21:31:58,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804432980] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:31:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805152060] [2024-09-12 21:31:58,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:31:58,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:31:58,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:31:58,736 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:31:58,737 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-12 21:31:58,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 21:31:58,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:31:58,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:31:58,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:31:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:59,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:31:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:31:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805152060] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:31:59,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:31:59,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 44 [2024-09-12 21:31:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483304565] [2024-09-12 21:31:59,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:31:59,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 21:31:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:31:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 21:31:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1556, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:31:59,355 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:31:59,613 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2024-09-12 21:31:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:31:59,613 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:31:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:31:59,614 INFO L225 Difference]: With dead ends: 207 [2024-09-12 21:31:59,614 INFO L226 Difference]: Without dead ends: 169 [2024-09-12 21:31:59,615 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 158 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=1636, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 21:31:59,615 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:31:59,615 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 263 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:31:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-12 21:31:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 110. [2024-09-12 21:31:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:31:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:31:59,668 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:31:59,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:31:59,668 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:31:59,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:31:59,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:31:59,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:31:59,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:31:59,669 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:31:59,683 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-12 21:31:59,869 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-12 21:31:59,870 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:31:59,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:31:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1319254423, now seen corresponding path program 34 times [2024-09-12 21:31:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:31:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782752810] [2024-09-12 21:31:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:31:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:31:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:32:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:32:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:32:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:32:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:32:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:32:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:32:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:32:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:32:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 119 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:00,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:00,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782752810] [2024-09-12 21:32:00,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782752810] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:00,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661040950] [2024-09-12 21:32:00,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:00,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:00,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:00,110 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:00,110 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-12 21:32:00,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:00,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:00,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:32:00,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:00,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661040950] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:00,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:00,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2024-09-12 21:32:00,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032006030] [2024-09-12 21:32:00,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:00,710 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 21:32:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:00,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 21:32:00,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:32:00,711 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:00,958 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2024-09-12 21:32:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:32:00,958 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:32:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:00,960 INFO L225 Difference]: With dead ends: 205 [2024-09-12 21:32:00,960 INFO L226 Difference]: Without dead ends: 167 [2024-09-12 21:32:00,960 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 159 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=333, Invalid=1559, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:32:00,960 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:00,960 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 271 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:00,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-12 21:32:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 110. [2024-09-12 21:32:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:32:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:32:01,019 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:32:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:01,019 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:32:01,020 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:01,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:32:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:32:01,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:01,021 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:01,037 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:01,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-09-12 21:32:01,221 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:01,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash 401447254, now seen corresponding path program 35 times [2024-09-12 21:32:01,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:01,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706104906] [2024-09-12 21:32:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:01,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:32:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:32:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:32:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:32:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:32:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:32:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:32:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:32:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:32:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 119 proven. 56 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:01,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:01,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706104906] [2024-09-12 21:32:01,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706104906] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:01,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813033231] [2024-09-12 21:32:01,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:01,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:01,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:01,451 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:01,452 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-12 21:32:01,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-12 21:32:01,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:01,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:32:01,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:01,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813033231] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:02,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 42 [2024-09-12 21:32:02,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086700466] [2024-09-12 21:32:02,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:02,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-12 21:32:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-12 21:32:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 21:32:02,047 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 42 states have internal predecessors, (75), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:02,307 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2024-09-12 21:32:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:32:02,307 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 42 states have internal predecessors, (75), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:32:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:02,308 INFO L225 Difference]: With dead ends: 201 [2024-09-12 21:32:02,308 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 21:32:02,309 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 160 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:32:02,309 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:02,309 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 321 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 21:32:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 110. [2024-09-12 21:32:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:32:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:32:02,363 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:32:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:02,364 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:32:02,364 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 42 states have internal predecessors, (75), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:02,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:32:02,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:32:02,364 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:02,364 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:02,376 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:02,565 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:02,565 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:02,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash 233293239, now seen corresponding path program 36 times [2024-09-12 21:32:02,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:02,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98906810] [2024-09-12 21:32:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:02,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:32:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:32:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:32:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:32:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:32:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:32:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:32:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:32:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:32:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 119 proven. 62 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98906810] [2024-09-12 21:32:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98906810] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765279453] [2024-09-12 21:32:02,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:02,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:02,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:02,802 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:02,803 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-12 21:32:02,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-12 21:32:02,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:02,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:32:02,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:03,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:03,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765279453] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:03,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:03,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 41 [2024-09-12 21:32:03,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259842163] [2024-09-12 21:32:03,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:03,378 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 21:32:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:03,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 21:32:03,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:32:03,379 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:03,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:03,606 INFO L93 Difference]: Finished difference Result 195 states and 227 transitions. [2024-09-12 21:32:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:32:03,607 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:32:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:03,608 INFO L225 Difference]: With dead ends: 195 [2024-09-12 21:32:03,608 INFO L226 Difference]: Without dead ends: 157 [2024-09-12 21:32:03,608 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 161 SyntacticMatches, 20 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 21:32:03,609 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:03,609 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 226 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-12 21:32:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2024-09-12 21:32:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:32:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-12 21:32:03,663 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-12 21:32:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:03,663 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-12 21:32:03,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:03,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-12 21:32:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 21:32:03,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:03,664 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:03,680 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:03,865 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:03,865 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:03,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1850341066, now seen corresponding path program 9 times [2024-09-12 21:32:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709811992] [2024-09-12 21:32:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:32:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:32:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:32:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:32:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:32:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:32:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:32:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:32:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:32:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:04,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:04,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709811992] [2024-09-12 21:32:04,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709811992] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:04,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45733899] [2024-09-12 21:32:04,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:04,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:04,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:04,097 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:04,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-12 21:32:04,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 21:32:04,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:04,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:32:04,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:04,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:04,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45733899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:04,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:04,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 40 [2024-09-12 21:32:04,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981002514] [2024-09-12 21:32:04,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:04,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 21:32:04,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:04,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 21:32:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 21:32:04,717 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:04,906 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2024-09-12 21:32:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:32:04,907 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-12 21:32:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:04,908 INFO L225 Difference]: With dead ends: 190 [2024-09-12 21:32:04,908 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 21:32:04,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 162 SyntacticMatches, 20 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:32:04,908 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:04,908 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 159 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 21:32:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 112. [2024-09-12 21:32:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:32:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2024-09-12 21:32:04,950 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 88 [2024-09-12 21:32:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:04,950 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2024-09-12 21:32:04,950 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:32:04,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2024-09-12 21:32:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-12 21:32:04,951 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:04,951 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:04,962 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:05,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-09-12 21:32:05,151 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:05,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1568569182, now seen corresponding path program 18 times [2024-09-12 21:32:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:05,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243614466] [2024-09-12 21:32:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:05,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:05,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:05,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243614466] [2024-09-12 21:32:05,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243614466] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:05,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348890234] [2024-09-12 21:32:05,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:05,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:05,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:05,296 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:05,298 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-12 21:32:05,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-12 21:32:05,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:05,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:05,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:05,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:32:05,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348890234] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:05,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:05,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-12 21:32:05,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234367616] [2024-09-12 21:32:05,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:05,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 21:32:05,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 21:32:05,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-12 21:32:05,545 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:32:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:05,678 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2024-09-12 21:32:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 21:32:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 89 [2024-09-12 21:32:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:05,679 INFO L225 Difference]: With dead ends: 125 [2024-09-12 21:32:05,680 INFO L226 Difference]: Without dead ends: 123 [2024-09-12 21:32:05,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 185 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-12 21:32:05,680 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:05,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 269 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-12 21:32:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-12 21:32:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 94 states have internal predecessors, (106), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2024-09-12 21:32:05,736 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 89 [2024-09-12 21:32:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:05,737 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2024-09-12 21:32:05,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:32:05,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2024-09-12 21:32:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:05,738 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:05,738 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:05,754 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-12 21:32:05,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:05,939 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:05,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash 123844214, now seen corresponding path program 19 times [2024-09-12 21:32:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:05,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487617311] [2024-09-12 21:32:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:06,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:06,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487617311] [2024-09-12 21:32:06,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487617311] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:06,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722946688] [2024-09-12 21:32:06,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:32:06,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:06,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:06,222 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:06,225 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-12 21:32:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:06,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:06,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:06,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:07,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722946688] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:07,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:07,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2024-09-12 21:32:07,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395256242] [2024-09-12 21:32:07,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:07,038 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 21:32:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 21:32:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:32:07,039 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 53 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:07,335 INFO L93 Difference]: Finished difference Result 204 states and 239 transitions. [2024-09-12 21:32:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:07,335 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:07,337 INFO L225 Difference]: With dead ends: 204 [2024-09-12 21:32:07,337 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 21:32:07,337 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 167 SyntacticMatches, 22 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=535, Invalid=2327, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 21:32:07,337 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:07,337 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 296 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 21:32:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 120. [2024-09-12 21:32:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:07,386 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:07,386 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:07,386 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:07,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:07,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:07,386 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:07,387 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:07,398 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-09-12 21:32:07,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:07,587 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:07,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1467016203, now seen corresponding path program 37 times [2024-09-12 21:32:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:07,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967970513] [2024-09-12 21:32:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 147 proven. 74 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:07,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967970513] [2024-09-12 21:32:07,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967970513] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:07,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243096031] [2024-09-12 21:32:07,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:32:07,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:07,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:07,872 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:07,873 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-12 21:32:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:07,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:07,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:08,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243096031] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:08,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:08,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 52 [2024-09-12 21:32:08,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442335798] [2024-09-12 21:32:08,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:08,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 21:32:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 21:32:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=2159, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:32:08,725 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 states have internal predecessors, (87), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:09,021 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2024-09-12 21:32:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:09,022 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 states have internal predecessors, (87), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:09,023 INFO L225 Difference]: With dead ends: 213 [2024-09-12 21:32:09,023 INFO L226 Difference]: Without dead ends: 172 [2024-09-12 21:32:09,024 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 168 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2061 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=501, Invalid=2255, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:32:09,024 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:09,024 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 326 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-12 21:32:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 120. [2024-09-12 21:32:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:09,088 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:09,089 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:09,089 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 states have internal predecessors, (87), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:09,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:09,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:09,090 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:09,103 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-12 21:32:09,290 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-09-12 21:32:09,290 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:09,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1668254358, now seen corresponding path program 38 times [2024-09-12 21:32:09,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:09,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40389997] [2024-09-12 21:32:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:09,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 147 proven. 67 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40389997] [2024-09-12 21:32:09,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40389997] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957696579] [2024-09-12 21:32:09,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:32:09,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:09,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:09,593 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:09,593 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-12 21:32:09,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:32:09,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:09,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:09,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:10,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:10,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957696579] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:10,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:10,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 51 [2024-09-12 21:32:10,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358376948] [2024-09-12 21:32:10,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:10,346 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 21:32:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:10,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 21:32:10,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=2087, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:32:10,347 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 51 states, 51 states have (on average 1.6862745098039216) internal successors, (86), 51 states have internal predecessors, (86), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:10,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:10,644 INFO L93 Difference]: Finished difference Result 220 states and 255 transitions. [2024-09-12 21:32:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:10,644 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.6862745098039216) internal successors, (86), 51 states have internal predecessors, (86), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:10,645 INFO L225 Difference]: With dead ends: 220 [2024-09-12 21:32:10,645 INFO L226 Difference]: Without dead ends: 179 [2024-09-12 21:32:10,646 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 22 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=471, Invalid=2181, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:32:10,646 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:10,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 269 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-12 21:32:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 120. [2024-09-12 21:32:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:10,694 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:10,694 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:10,694 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.6862745098039216) internal successors, (86), 51 states have internal predecessors, (86), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:10,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:10,694 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:10,695 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:10,707 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-09-12 21:32:10,895 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-12 21:32:10,895 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:10,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash 661013461, now seen corresponding path program 39 times [2024-09-12 21:32:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379148417] [2024-09-12 21:32:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 147 proven. 62 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379148417] [2024-09-12 21:32:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379148417] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363140459] [2024-09-12 21:32:11,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:11,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:11,167 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:11,168 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-12 21:32:11,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 21:32:11,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:11,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:11,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:11,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:11,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363140459] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:11,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:11,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 50 [2024-09-12 21:32:11,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365128766] [2024-09-12 21:32:11,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:11,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 21:32:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 21:32:11,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2013, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:32:11,904 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 50 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:12,234 INFO L93 Difference]: Finished difference Result 225 states and 260 transitions. [2024-09-12 21:32:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:12,236 INFO L225 Difference]: With dead ends: 225 [2024-09-12 21:32:12,236 INFO L226 Difference]: Without dead ends: 184 [2024-09-12 21:32:12,236 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 170 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=445, Invalid=2105, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:32:12,236 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:12,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 303 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-12 21:32:12,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 120. [2024-09-12 21:32:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:12,300 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:12,300 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:12,300 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:12,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:12,300 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:12,301 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:12,313 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-12 21:32:12,501 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-12 21:32:12,501 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:12,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash -618404170, now seen corresponding path program 40 times [2024-09-12 21:32:12,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:12,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264426725] [2024-09-12 21:32:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 147 proven. 59 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264426725] [2024-09-12 21:32:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264426725] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877148461] [2024-09-12 21:32:12,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:12,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:12,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:12,766 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:12,767 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-12 21:32:12,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:12,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:12,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:12,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:13,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:13,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877148461] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:13,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:13,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 49 [2024-09-12 21:32:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11167674] [2024-09-12 21:32:13,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:13,488 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 21:32:13,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:13,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 21:32:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1937, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:32:13,489 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:13,885 INFO L93 Difference]: Finished difference Result 228 states and 263 transitions. [2024-09-12 21:32:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:13,887 INFO L225 Difference]: With dead ends: 228 [2024-09-12 21:32:13,887 INFO L226 Difference]: Without dead ends: 187 [2024-09-12 21:32:13,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 171 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:32:13,887 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:13,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 436 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-12 21:32:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 120. [2024-09-12 21:32:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:13,940 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:13,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:13,940 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:13,940 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:13,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:13,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:13,941 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:13,941 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:13,953 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-12 21:32:14,141 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-12 21:32:14,141 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:14,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1213865035, now seen corresponding path program 41 times [2024-09-12 21:32:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787760495] [2024-09-12 21:32:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 147 proven. 58 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:14,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:14,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787760495] [2024-09-12 21:32:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787760495] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:14,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157373173] [2024-09-12 21:32:14,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:14,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:14,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:14,406 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:14,408 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-12 21:32:14,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-12 21:32:14,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:14,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:14,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 175 proven. 30 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:14,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 175 proven. 30 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:15,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157373173] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:15,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:15,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 48 [2024-09-12 21:32:15,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816775252] [2024-09-12 21:32:15,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:15,124 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 21:32:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 21:32:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1859, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:32:15,125 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:15,531 INFO L93 Difference]: Finished difference Result 229 states and 264 transitions. [2024-09-12 21:32:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:15,532 INFO L225 Difference]: With dead ends: 229 [2024-09-12 21:32:15,533 INFO L226 Difference]: Without dead ends: 188 [2024-09-12 21:32:15,533 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 172 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=405, Invalid=1947, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:32:15,533 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:15,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 456 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-12 21:32:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 120. [2024-09-12 21:32:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:15,613 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:15,613 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:15,614 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:15,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:15,615 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:15,615 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:15,631 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-09-12 21:32:15,815 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:15,815 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:15,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1233073450, now seen corresponding path program 42 times [2024-09-12 21:32:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:15,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534413752] [2024-09-12 21:32:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 147 proven. 59 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534413752] [2024-09-12 21:32:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534413752] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465294339] [2024-09-12 21:32:16,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:16,093 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:16,093 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-12 21:32:16,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-09-12 21:32:16,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:16,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:16,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:16,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:16,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465294339] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:16,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:16,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 47 [2024-09-12 21:32:16,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190765674] [2024-09-12 21:32:16,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:16,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 21:32:16,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 21:32:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1779, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:32:16,824 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:17,277 INFO L93 Difference]: Finished difference Result 228 states and 263 transitions. [2024-09-12 21:32:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:17,279 INFO L225 Difference]: With dead ends: 228 [2024-09-12 21:32:17,279 INFO L226 Difference]: Without dead ends: 187 [2024-09-12 21:32:17,280 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 173 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:32:17,280 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:17,280 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 447 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-12 21:32:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 120. [2024-09-12 21:32:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:17,355 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:17,355 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:17,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:17,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:17,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:17,356 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:17,372 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:17,556 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:17,556 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:17,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:17,556 INFO L85 PathProgramCache]: Analyzing trace with hash 151780245, now seen corresponding path program 43 times [2024-09-12 21:32:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099611313] [2024-09-12 21:32:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 147 proven. 62 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:17,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099611313] [2024-09-12 21:32:17,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099611313] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299955336] [2024-09-12 21:32:17,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:32:17,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:17,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:17,825 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:17,827 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-12 21:32:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:17,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:17,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:18,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:18,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299955336] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:18,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:18,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 46 [2024-09-12 21:32:18,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114235402] [2024-09-12 21:32:18,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:18,531 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 21:32:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 21:32:18,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:32:18,531 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 46 states, 46 states have (on average 1.7608695652173914) internal successors, (81), 46 states have internal predecessors, (81), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:18,825 INFO L93 Difference]: Finished difference Result 225 states and 260 transitions. [2024-09-12 21:32:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:18,825 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.7608695652173914) internal successors, (81), 46 states have internal predecessors, (81), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:18,826 INFO L225 Difference]: With dead ends: 225 [2024-09-12 21:32:18,826 INFO L226 Difference]: Without dead ends: 184 [2024-09-12 21:32:18,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 174 SyntacticMatches, 22 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=1781, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:32:18,827 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:18,827 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 191 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:18,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-12 21:32:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 120. [2024-09-12 21:32:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:18,878 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:18,879 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:18,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.7608695652173914) internal successors, (81), 46 states have internal predecessors, (81), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:18,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:18,879 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:18,879 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:18,879 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:18,891 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-12 21:32:19,080 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:19,080 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:19,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1443378934, now seen corresponding path program 44 times [2024-09-12 21:32:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:19,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138265232] [2024-09-12 21:32:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:19,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 147 proven. 67 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138265232] [2024-09-12 21:32:19,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138265232] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676838806] [2024-09-12 21:32:19,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:32:19,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:19,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:19,343 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:19,344 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-12 21:32:19,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:32:19,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:19,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:19,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:19,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:19,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676838806] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:19,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:20,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 45 [2024-09-12 21:32:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850061826] [2024-09-12 21:32:20,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:20,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 21:32:20,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 21:32:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 21:32:20,001 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:20,352 INFO L93 Difference]: Finished difference Result 220 states and 255 transitions. [2024-09-12 21:32:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:20,352 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:20,353 INFO L225 Difference]: With dead ends: 220 [2024-09-12 21:32:20,353 INFO L226 Difference]: Without dead ends: 179 [2024-09-12 21:32:20,353 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 175 SyntacticMatches, 22 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:32:20,354 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:20,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 396 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-12 21:32:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 120. [2024-09-12 21:32:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:20,412 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:20,412 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:20,412 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:20,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:20,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:20,413 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:20,424 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-09-12 21:32:20,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:20,613 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:20,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1562997899, now seen corresponding path program 45 times [2024-09-12 21:32:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:20,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759196221] [2024-09-12 21:32:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:20,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 147 proven. 74 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:20,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:20,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759196221] [2024-09-12 21:32:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759196221] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379977430] [2024-09-12 21:32:20,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:20,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:20,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:20,876 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:20,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-12 21:32:20,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 21:32:20,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:20,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:20,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:21,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379977430] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:21,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:21,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 44 [2024-09-12 21:32:21,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896374412] [2024-09-12 21:32:21,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:21,531 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 21:32:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 21:32:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:32:21,532 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:21,833 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2024-09-12 21:32:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:21,834 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:21,835 INFO L225 Difference]: With dead ends: 213 [2024-09-12 21:32:21,835 INFO L226 Difference]: Without dead ends: 172 [2024-09-12 21:32:21,836 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 176 SyntacticMatches, 22 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=373, Invalid=1607, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 21:32:21,836 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:21,836 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 361 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-12 21:32:21,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 120. [2024-09-12 21:32:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-12 21:32:21,920 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-12 21:32:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:21,920 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-12 21:32:21,920 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:21,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-12 21:32:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 21:32:21,921 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:21,921 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:21,937 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:22,121 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:22,122 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:22,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1388063510, now seen corresponding path program 10 times [2024-09-12 21:32:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:22,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138989732] [2024-09-12 21:32:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:22,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:32:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:32:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:32:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:32:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:32:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:32:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:32:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:32:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:32:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:32:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:22,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138989732] [2024-09-12 21:32:22,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138989732] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922551973] [2024-09-12 21:32:22,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:22,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:22,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:22,396 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:22,396 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-12 21:32:22,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:22,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:22,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 21:32:22,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:22,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922551973] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:23,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 43 [2024-09-12 21:32:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674144981] [2024-09-12 21:32:23,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:23,075 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 21:32:23,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 21:32:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1439, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:32:23,076 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 43 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:23,346 INFO L93 Difference]: Finished difference Result 207 states and 243 transitions. [2024-09-12 21:32:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 21:32:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-12 21:32:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:23,347 INFO L225 Difference]: With dead ends: 207 [2024-09-12 21:32:23,347 INFO L226 Difference]: Without dead ends: 166 [2024-09-12 21:32:23,347 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 177 SyntacticMatches, 22 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:32:23,348 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:23,348 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 334 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-09-12 21:32:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 122. [2024-09-12 21:32:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 97 states have internal predecessors, (110), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2024-09-12 21:32:23,436 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 96 [2024-09-12 21:32:23,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:23,436 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2024-09-12 21:32:23,436 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:32:23,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2024-09-12 21:32:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-12 21:32:23,437 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:23,437 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:23,454 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-09-12 21:32:23,639 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:23,639 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:23,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash 949083873, now seen corresponding path program 20 times [2024-09-12 21:32:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22875549] [2024-09-12 21:32:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:23,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:23,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22875549] [2024-09-12 21:32:23,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22875549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:23,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463877261] [2024-09-12 21:32:23,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:32:23,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:23,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:23,796 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:23,797 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-12 21:32:23,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:32:23,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:23,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 21:32:23,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:23,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:32:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463877261] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:24,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:24,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-12 21:32:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162112208] [2024-09-12 21:32:24,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:24,080 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 21:32:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 21:32:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-12 21:32:24,080 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:32:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:24,235 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2024-09-12 21:32:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 21:32:24,236 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 97 [2024-09-12 21:32:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:24,237 INFO L225 Difference]: With dead ends: 135 [2024-09-12 21:32:24,237 INFO L226 Difference]: Without dead ends: 133 [2024-09-12 21:32:24,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:32:24,237 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:24,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 287 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-12 21:32:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2024-09-12 21:32:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 102 states have internal predecessors, (115), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2024-09-12 21:32:24,293 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 97 [2024-09-12 21:32:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:24,293 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2024-09-12 21:32:24,293 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:32:24,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2024-09-12 21:32:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:24,294 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:24,294 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:24,311 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-12 21:32:24,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-09-12 21:32:24,494 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:24,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1261524137, now seen corresponding path program 21 times [2024-09-12 21:32:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:24,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612106254] [2024-09-12 21:32:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:24,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:24,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612106254] [2024-09-12 21:32:24,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612106254] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:24,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349857046] [2024-09-12 21:32:24,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:24,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:24,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:24,839 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:24,841 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-12 21:32:24,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-12 21:32:24,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:24,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:24,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:25,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349857046] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:25,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:25,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2024-09-12 21:32:25,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737456219] [2024-09-12 21:32:25,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:25,862 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 21:32:25,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 21:32:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2583, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:32:25,863 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 57 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 states have internal predecessors, (94), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:26,230 INFO L93 Difference]: Finished difference Result 221 states and 259 transitions. [2024-09-12 21:32:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:26,230 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 states have internal predecessors, (94), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:26,232 INFO L225 Difference]: With dead ends: 221 [2024-09-12 21:32:26,232 INFO L226 Difference]: Without dead ends: 177 [2024-09-12 21:32:26,232 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 181 SyntacticMatches, 24 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=617, Invalid=2689, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:32:26,233 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:26,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 325 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-12 21:32:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 130. [2024-09-12 21:32:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:26,321 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:26,321 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:26,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 states have internal predecessors, (94), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:26,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:26,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:26,322 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:26,334 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-12 21:32:26,522 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-12 21:32:26,523 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:26,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1723474390, now seen corresponding path program 46 times [2024-09-12 21:32:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623936891] [2024-09-12 21:32:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:26,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 178 proven. 87 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623936891] [2024-09-12 21:32:26,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623936891] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663440374] [2024-09-12 21:32:26,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:26,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:26,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:26,841 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:26,843 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-12 21:32:26,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:26,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:26,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:26,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:27,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:27,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663440374] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:27,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-09-12 21:32:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407800104] [2024-09-12 21:32:27,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:27,692 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 21:32:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 21:32:27,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=2508, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:32:27,693 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 56 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 56 states have internal predecessors, (93), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:28,072 INFO L93 Difference]: Finished difference Result 231 states and 269 transitions. [2024-09-12 21:32:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:28,072 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 56 states have internal predecessors, (93), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:28,074 INFO L225 Difference]: With dead ends: 231 [2024-09-12 21:32:28,074 INFO L226 Difference]: Without dead ends: 187 [2024-09-12 21:32:28,074 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 182 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2436 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=580, Invalid=2612, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:32:28,074 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:28,074 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 372 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-12 21:32:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 130. [2024-09-12 21:32:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:28,143 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:28,143 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:28,143 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 56 states have internal predecessors, (93), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:28,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:28,144 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:28,144 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:28,160 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-09-12 21:32:28,344 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:28,344 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:28,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash -396992649, now seen corresponding path program 47 times [2024-09-12 21:32:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273455500] [2024-09-12 21:32:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 178 proven. 79 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:28,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273455500] [2024-09-12 21:32:28,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273455500] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:28,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918225644] [2024-09-12 21:32:28,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:28,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:28,689 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:28,689 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-12 21:32:28,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 21:32:28,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:28,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:28,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:29,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:29,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918225644] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:29,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:29,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 55 [2024-09-12 21:32:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987938918] [2024-09-12 21:32:29,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:29,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 21:32:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 21:32:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2431, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:32:29,572 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 55 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:30,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:30,126 INFO L93 Difference]: Finished difference Result 239 states and 277 transitions. [2024-09-12 21:32:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:30,126 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:30,128 INFO L225 Difference]: With dead ends: 239 [2024-09-12 21:32:30,128 INFO L226 Difference]: Without dead ends: 195 [2024-09-12 21:32:30,128 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 183 SyntacticMatches, 24 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=547, Invalid=2533, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:32:30,129 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:30,129 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 356 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-12 21:32:30,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 130. [2024-09-12 21:32:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:30,221 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:30,221 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:30,221 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:30,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:30,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:30,222 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:30,222 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:30,237 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-09-12 21:32:30,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:30,424 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:30,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1197173174, now seen corresponding path program 48 times [2024-09-12 21:32:30,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:30,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783809209] [2024-09-12 21:32:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 178 proven. 73 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:30,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:30,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783809209] [2024-09-12 21:32:30,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783809209] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:30,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732517342] [2024-09-12 21:32:30,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:30,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:30,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:30,840 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:30,841 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-12 21:32:30,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-12 21:32:30,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:30,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:30,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:31,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:31,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732517342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:31,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:31,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 54 [2024-09-12 21:32:31,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733746298] [2024-09-12 21:32:31,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:31,681 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 21:32:31,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 21:32:31,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 21:32:31,682 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 54 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 54 states have internal predecessors, (91), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:32,098 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2024-09-12 21:32:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:32,099 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 54 states have internal predecessors, (91), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:32,100 INFO L225 Difference]: With dead ends: 245 [2024-09-12 21:32:32,100 INFO L226 Difference]: Without dead ends: 201 [2024-09-12 21:32:32,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 184 SyntacticMatches, 24 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=518, Invalid=2452, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:32:32,101 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:32,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 277 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-12 21:32:32,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 130. [2024-09-12 21:32:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:32,174 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:32,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:32,174 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:32,174 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 54 states have internal predecessors, (91), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:32,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:32,174 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:32,175 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:32,186 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:32,375 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:32,375 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:32,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1937990761, now seen corresponding path program 49 times [2024-09-12 21:32:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:32,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77121009] [2024-09-12 21:32:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 178 proven. 69 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:32,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77121009] [2024-09-12 21:32:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77121009] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265749662] [2024-09-12 21:32:32,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:32:32,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:32,677 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:32,678 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-12 21:32:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:32,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:32,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:33,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:33,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265749662] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:33,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:33,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 53 [2024-09-12 21:32:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790001150] [2024-09-12 21:32:33,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:33,518 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 21:32:33,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 21:32:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=2271, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:32:33,519 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 53 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 53 states have internal predecessors, (90), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:33,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:33,999 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2024-09-12 21:32:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:34,000 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 53 states have internal predecessors, (90), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:34,002 INFO L225 Difference]: With dead ends: 249 [2024-09-12 21:32:34,002 INFO L226 Difference]: Without dead ends: 205 [2024-09-12 21:32:34,002 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 185 SyntacticMatches, 24 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=493, Invalid=2369, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 21:32:34,002 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:34,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 333 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-12 21:32:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 130. [2024-09-12 21:32:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:34,095 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:34,096 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:34,096 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 53 states have internal predecessors, (90), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:34,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:34,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:34,096 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:34,096 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:34,108 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-09-12 21:32:34,297 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:34,297 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:34,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1701652886, now seen corresponding path program 50 times [2024-09-12 21:32:34,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:34,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675727896] [2024-09-12 21:32:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:34,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 178 proven. 67 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:34,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675727896] [2024-09-12 21:32:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675727896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074367248] [2024-09-12 21:32:34,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:32:34,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:34,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:34,629 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:34,630 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-12 21:32:34,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:32:34,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:34,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:34,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:35,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:35,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074367248] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:35,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:35,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 52 [2024-09-12 21:32:35,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244542291] [2024-09-12 21:32:35,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:35,422 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 21:32:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 21:32:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2188, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:32:35,423 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 52 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:35,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:35,874 INFO L93 Difference]: Finished difference Result 251 states and 289 transitions. [2024-09-12 21:32:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:35,876 INFO L225 Difference]: With dead ends: 251 [2024-09-12 21:32:35,876 INFO L226 Difference]: Without dead ends: 207 [2024-09-12 21:32:35,876 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 186 SyntacticMatches, 24 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=472, Invalid=2284, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:32:35,876 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:35,876 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 277 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-09-12 21:32:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 130. [2024-09-12 21:32:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:35,988 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:35,988 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:35,988 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:35,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:35,989 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:35,989 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:36,005 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-12 21:32:36,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:36,190 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:36,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash -951885897, now seen corresponding path program 51 times [2024-09-12 21:32:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294929021] [2024-09-12 21:32:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:36,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 178 proven. 67 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:36,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:36,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294929021] [2024-09-12 21:32:36,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294929021] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:36,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362031111] [2024-09-12 21:32:36,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:36,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:36,487 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:36,491 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-12 21:32:36,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-12 21:32:36,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:36,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:36,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:36,994 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:36,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:37,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362031111] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:37,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:37,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 51 [2024-09-12 21:32:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417029014] [2024-09-12 21:32:37,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:37,266 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 21:32:37,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:37,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 21:32:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=2103, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:32:37,266 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 51 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:37,702 INFO L93 Difference]: Finished difference Result 251 states and 289 transitions. [2024-09-12 21:32:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:37,702 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:37,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:37,704 INFO L225 Difference]: With dead ends: 251 [2024-09-12 21:32:37,704 INFO L226 Difference]: Without dead ends: 207 [2024-09-12 21:32:37,704 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 187 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=455, Invalid=2197, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:32:37,704 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:37,704 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 267 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-09-12 21:32:37,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 130. [2024-09-12 21:32:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:37,782 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:37,782 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:37,782 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:37,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:37,783 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:37,783 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:37,798 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-09-12 21:32:37,983 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:37,984 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:37,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash -760389258, now seen corresponding path program 52 times [2024-09-12 21:32:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654390402] [2024-09-12 21:32:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 178 proven. 69 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:38,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:38,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654390402] [2024-09-12 21:32:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654390402] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:38,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648656108] [2024-09-12 21:32:38,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:38,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:38,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:38,286 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:38,288 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-12 21:32:38,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:38,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:38,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:38,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:38,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648656108] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:39,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:39,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 50 [2024-09-12 21:32:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756588923] [2024-09-12 21:32:39,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:39,096 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 21:32:39,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 21:32:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=2016, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:32:39,096 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 50 states, 50 states have (on average 1.74) internal successors, (87), 50 states have internal predecessors, (87), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:39,594 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2024-09-12 21:32:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.74) internal successors, (87), 50 states have internal predecessors, (87), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:39,596 INFO L225 Difference]: With dead ends: 249 [2024-09-12 21:32:39,596 INFO L226 Difference]: Without dead ends: 205 [2024-09-12 21:32:39,596 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 188 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=442, Invalid=2108, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:32:39,596 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:39,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 354 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-12 21:32:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 130. [2024-09-12 21:32:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:39,671 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:39,671 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:39,671 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.74) internal successors, (87), 50 states have internal predecessors, (87), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:39,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:39,672 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:39,672 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:39,684 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-09-12 21:32:39,872 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:39,872 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:39,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1462545367, now seen corresponding path program 53 times [2024-09-12 21:32:39,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:39,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165939033] [2024-09-12 21:32:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 178 proven. 73 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:40,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:40,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165939033] [2024-09-12 21:32:40,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165939033] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:40,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139299439] [2024-09-12 21:32:40,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:40,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:40,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:40,175 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:40,177 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-12 21:32:40,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 21:32:40,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:40,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:40,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:40,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:40,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139299439] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:40,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:40,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 49 [2024-09-12 21:32:40,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898273150] [2024-09-12 21:32:40,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:40,933 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 21:32:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:40,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 21:32:40,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1927, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:32:40,934 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 49 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 49 states have internal predecessors, (86), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:41,391 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2024-09-12 21:32:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 49 states have internal predecessors, (86), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:41,393 INFO L225 Difference]: With dead ends: 245 [2024-09-12 21:32:41,393 INFO L226 Difference]: Without dead ends: 201 [2024-09-12 21:32:41,393 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 189 SyntacticMatches, 24 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=433, Invalid=2017, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:32:41,393 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:41,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 395 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-12 21:32:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 130. [2024-09-12 21:32:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:41,486 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:41,486 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:41,486 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 49 states have internal predecessors, (86), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:41,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:41,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:41,487 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:41,498 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:41,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:41,687 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:41,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash -128315050, now seen corresponding path program 54 times [2024-09-12 21:32:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:41,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33348063] [2024-09-12 21:32:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:41,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 178 proven. 79 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33348063] [2024-09-12 21:32:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33348063] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589632432] [2024-09-12 21:32:41,991 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:41,992 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:41,992 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-12 21:32:42,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-12 21:32:42,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:42,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:42,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:42,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589632432] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:42,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 48 [2024-09-12 21:32:42,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308673308] [2024-09-12 21:32:42,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:42,728 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 21:32:42,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 21:32:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:32:42,729 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:43,326 INFO L93 Difference]: Finished difference Result 239 states and 277 transitions. [2024-09-12 21:32:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:43,326 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:43,328 INFO L225 Difference]: With dead ends: 239 [2024-09-12 21:32:43,328 INFO L226 Difference]: Without dead ends: 195 [2024-09-12 21:32:43,328 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 190 SyntacticMatches, 24 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1924, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:32:43,329 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:43,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 279 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:43,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-12 21:32:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 130. [2024-09-12 21:32:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:43,432 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:43,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:43,433 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:43,433 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:43,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:43,434 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:43,434 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:43,450 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:43,634 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-09-12 21:32:43,635 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:43,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:43,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1288011785, now seen corresponding path program 55 times [2024-09-12 21:32:43,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:43,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104270005] [2024-09-12 21:32:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:43,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 178 proven. 87 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:44,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:44,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104270005] [2024-09-12 21:32:44,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104270005] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242830302] [2024-09-12 21:32:44,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:32:44,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:44,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:44,076 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:44,077 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-12 21:32:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:44,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:44,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:44,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:44,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242830302] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:44,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:44,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 47 [2024-09-12 21:32:44,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195956358] [2024-09-12 21:32:44,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:44,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 21:32:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 21:32:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1743, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:32:44,830 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:45,182 INFO L93 Difference]: Finished difference Result 231 states and 269 transitions. [2024-09-12 21:32:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:45,182 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:45,184 INFO L225 Difference]: With dead ends: 231 [2024-09-12 21:32:45,184 INFO L226 Difference]: Without dead ends: 187 [2024-09-12 21:32:45,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 191 SyntacticMatches, 24 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 21:32:45,184 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:45,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 256 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-12 21:32:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 130. [2024-09-12 21:32:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-12 21:32:45,263 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-12 21:32:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:45,263 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-12 21:32:45,263 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:45,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-12 21:32:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 21:32:45,264 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:45,264 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:45,280 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-09-12 21:32:45,465 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-12 21:32:45,465 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:45,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:45,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1999714614, now seen corresponding path program 11 times [2024-09-12 21:32:45,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:45,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104480324] [2024-09-12 21:32:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:32:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:32:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:32:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:32:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:32:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:32:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:32:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:32:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:32:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:32:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:32:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:45,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104480324] [2024-09-12 21:32:45,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104480324] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219063682] [2024-09-12 21:32:45,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:45,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:45,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:45,782 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:45,782 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-12 21:32:45,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 21:32:45,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:45,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:32:45,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:46,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:46,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219063682] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:46,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:46,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 46 [2024-09-12 21:32:46,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286738068] [2024-09-12 21:32:46,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:46,493 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 21:32:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:46,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 21:32:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1648, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 21:32:46,494 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 46 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 46 states have internal predecessors, (83), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:46,871 INFO L93 Difference]: Finished difference Result 224 states and 263 transitions. [2024-09-12 21:32:46,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:32:46,871 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 46 states have internal predecessors, (83), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-12 21:32:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:46,873 INFO L225 Difference]: With dead ends: 224 [2024-09-12 21:32:46,873 INFO L226 Difference]: Without dead ends: 180 [2024-09-12 21:32:46,873 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=430, Invalid=1732, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:32:46,873 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:46,873 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 518 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-12 21:32:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 132. [2024-09-12 21:32:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 105 states have internal predecessors, (119), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:32:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2024-09-12 21:32:46,955 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 104 [2024-09-12 21:32:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:46,955 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2024-09-12 21:32:46,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 46 states have internal predecessors, (83), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:32:46,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2024-09-12 21:32:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-09-12 21:32:46,956 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:46,956 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:46,968 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-12 21:32:47,156 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:47,157 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:47,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1609644226, now seen corresponding path program 22 times [2024-09-12 21:32:47,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:47,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334652993] [2024-09-12 21:32:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:47,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:32:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:47,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:47,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334652993] [2024-09-12 21:32:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334652993] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713135387] [2024-09-12 21:32:47,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:47,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:47,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:47,342 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:47,343 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-12 21:32:47,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:47,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:47,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:32:47,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:47,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:32:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713135387] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:47,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:47,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-12 21:32:47,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680103860] [2024-09-12 21:32:47,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:47,638 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 21:32:47,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:47,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 21:32:47,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:32:47,639 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:47,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:47,812 INFO L93 Difference]: Finished difference Result 145 states and 160 transitions. [2024-09-12 21:32:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 21:32:47,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 105 [2024-09-12 21:32:47,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:47,813 INFO L225 Difference]: With dead ends: 145 [2024-09-12 21:32:47,813 INFO L226 Difference]: Without dead ends: 143 [2024-09-12 21:32:47,813 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 219 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-12 21:32:47,813 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:47,814 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 245 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:32:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-12 21:32:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-09-12 21:32:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 109 states have (on average 1.1376146788990826) internal successors, (124), 110 states have internal predecessors, (124), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:32:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2024-09-12 21:32:47,927 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 105 [2024-09-12 21:32:47,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:47,927 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2024-09-12 21:32:47,927 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:32:47,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:47,927 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2024-09-12 21:32:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:32:47,928 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:47,928 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:47,940 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-09-12 21:32:48,128 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:48,128 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:48,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash -367943082, now seen corresponding path program 23 times [2024-09-12 21:32:48,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:48,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21590003] [2024-09-12 21:32:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:48,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:32:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:48,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:48,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21590003] [2024-09-12 21:32:48,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21590003] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:48,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607550369] [2024-09-12 21:32:48,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:48,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:48,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:48,484 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:48,485 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-12 21:32:48,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 21:32:48,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:48,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:32:48,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:49,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:49,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607550369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:49,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:49,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-09-12 21:32:49,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042108081] [2024-09-12 21:32:49,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:49,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-12 21:32:49,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:49,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-12 21:32:49,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2963, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:32:49,487 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 61 states, 61 states have (on average 1.639344262295082) internal successors, (100), 61 states have internal predecessors, (100), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:49,870 INFO L93 Difference]: Finished difference Result 238 states and 279 transitions. [2024-09-12 21:32:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:32:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.639344262295082) internal successors, (100), 61 states have internal predecessors, (100), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:32:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:49,871 INFO L225 Difference]: With dead ends: 238 [2024-09-12 21:32:49,872 INFO L226 Difference]: Without dead ends: 191 [2024-09-12 21:32:49,872 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 195 SyntacticMatches, 26 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2939 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=3077, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:32:49,872 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:49,872 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 406 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-12 21:32:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 140. [2024-09-12 21:32:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:32:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:32:50,010 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:32:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:50,010 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:32:50,010 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.639344262295082) internal successors, (100), 61 states have internal predecessors, (100), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:32:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:32:50,011 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:50,012 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:50,028 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:50,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:50,212 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:50,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1709561387, now seen corresponding path program 56 times [2024-09-12 21:32:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845193495] [2024-09-12 21:32:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:32:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 212 proven. 101 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:50,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:50,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845193495] [2024-09-12 21:32:50,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845193495] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:50,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499527232] [2024-09-12 21:32:50,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:32:50,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:50,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:50,561 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:50,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-12 21:32:50,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:32:50,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:50,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:32:50,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:51,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:51,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499527232] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:51,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 60 [2024-09-12 21:32:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63275250] [2024-09-12 21:32:51,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:51,560 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 21:32:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 21:32:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=657, Invalid=2883, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:32:51,561 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 60 states, 60 states have (on average 1.65) internal successors, (99), 60 states have internal predecessors, (99), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:52,017 INFO L93 Difference]: Finished difference Result 249 states and 290 transitions. [2024-09-12 21:32:52,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:32:52,017 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.65) internal successors, (99), 60 states have internal predecessors, (99), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:32:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:52,019 INFO L225 Difference]: With dead ends: 249 [2024-09-12 21:32:52,019 INFO L226 Difference]: Without dead ends: 202 [2024-09-12 21:32:52,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 196 SyntacticMatches, 26 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2842 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=665, Invalid=2995, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:32:52,019 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:52,020 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 342 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-09-12 21:32:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2024-09-12 21:32:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:32:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:32:52,118 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:32:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:52,119 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:32:52,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.65) internal successors, (99), 60 states have internal predecessors, (99), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:52,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:32:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:32:52,119 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:52,119 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:52,132 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-09-12 21:32:52,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:52,320 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:52,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1295201910, now seen corresponding path program 57 times [2024-09-12 21:32:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:52,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758148849] [2024-09-12 21:32:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:32:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 212 proven. 92 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:52,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:52,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758148849] [2024-09-12 21:32:52,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758148849] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:52,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943662057] [2024-09-12 21:32:52,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:32:52,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:52,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:52,670 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:52,671 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-12 21:32:52,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-12 21:32:52,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:52,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:32:52,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:53,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943662057] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:53,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:53,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 59 [2024-09-12 21:32:53,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253067952] [2024-09-12 21:32:53,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:53,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 21:32:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 21:32:53,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=2801, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:32:53,619 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 59 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 59 states have internal predecessors, (98), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:54,136 INFO L93 Difference]: Finished difference Result 258 states and 299 transitions. [2024-09-12 21:32:54,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:32:54,136 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 59 states have internal predecessors, (98), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:32:54,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:54,137 INFO L225 Difference]: With dead ends: 258 [2024-09-12 21:32:54,137 INFO L226 Difference]: Without dead ends: 211 [2024-09-12 21:32:54,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 197 SyntacticMatches, 26 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2698 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=629, Invalid=2911, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:32:54,138 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:54,138 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 394 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-12 21:32:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 140. [2024-09-12 21:32:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:32:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:32:54,235 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:32:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:54,235 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:32:54,235 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 59 states have internal predecessors, (98), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:54,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:32:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:32:54,236 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:54,236 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:54,247 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-09-12 21:32:54,436 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:54,436 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:54,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:54,437 INFO L85 PathProgramCache]: Analyzing trace with hash 6656437, now seen corresponding path program 58 times [2024-09-12 21:32:54,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:54,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413726857] [2024-09-12 21:32:54,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:54,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:32:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 212 proven. 85 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413726857] [2024-09-12 21:32:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413726857] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305780008] [2024-09-12 21:32:54,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:32:54,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:54,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:54,790 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:54,790 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-12 21:32:54,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:32:54,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:54,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:32:54,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:55,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:55,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305780008] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:55,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:55,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 58 [2024-09-12 21:32:55,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851371816] [2024-09-12 21:32:55,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:55,748 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 21:32:55,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 21:32:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=2717, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:32:55,749 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 58 states have internal predecessors, (97), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:56,514 INFO L93 Difference]: Finished difference Result 265 states and 306 transitions. [2024-09-12 21:32:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:32:56,515 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 58 states have internal predecessors, (97), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:32:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:56,517 INFO L225 Difference]: With dead ends: 265 [2024-09-12 21:32:56,517 INFO L226 Difference]: Without dead ends: 218 [2024-09-12 21:32:56,517 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 198 SyntacticMatches, 26 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=597, Invalid=2825, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:32:56,517 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:56,517 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 350 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-09-12 21:32:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 140. [2024-09-12 21:32:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:32:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:32:56,614 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:32:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:56,614 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:32:56,614 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 58 states have internal predecessors, (97), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:56,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:32:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:32:56,615 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:56,615 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:56,627 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-12 21:32:56,815 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:56,815 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:56,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -34909546, now seen corresponding path program 59 times [2024-09-12 21:32:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:56,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611850095] [2024-09-12 21:32:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:56,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:32:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 212 proven. 80 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:57,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:57,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611850095] [2024-09-12 21:32:57,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611850095] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:57,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561116127] [2024-09-12 21:32:57,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:32:57,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:57,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:57,161 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:57,162 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-12 21:32:57,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 21:32:57,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:57,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:32:57,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:57,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:32:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:58,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561116127] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:32:58,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:32:58,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 57 [2024-09-12 21:32:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880278002] [2024-09-12 21:32:58,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:32:58,064 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 21:32:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:32:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 21:32:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=2631, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:32:58,065 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 57 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 57 states have internal predecessors, (96), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:32:58,652 INFO L93 Difference]: Finished difference Result 270 states and 311 transitions. [2024-09-12 21:32:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:32:58,653 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 57 states have internal predecessors, (96), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:32:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:32:58,654 INFO L225 Difference]: With dead ends: 270 [2024-09-12 21:32:58,654 INFO L226 Difference]: Without dead ends: 223 [2024-09-12 21:32:58,654 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 199 SyntacticMatches, 26 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=569, Invalid=2737, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:32:58,655 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:32:58,655 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 307 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:32:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-09-12 21:32:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 140. [2024-09-12 21:32:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:32:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:32:58,757 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:32:58,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:32:58,757 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:32:58,757 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 57 states have internal predecessors, (96), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:32:58,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:32:58,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:32:58,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:32:58,758 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:32:58,772 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-09-12 21:32:58,958 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:58,959 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:32:58,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:32:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1210675605, now seen corresponding path program 60 times [2024-09-12 21:32:58,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:32:58,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141746502] [2024-09-12 21:32:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:32:58,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:32:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:32:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:32:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:32:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:32:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:32:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:32:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:32:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:32:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:32:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:32:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:32:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:32:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:32:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:32:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 212 proven. 77 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:59,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:32:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141746502] [2024-09-12 21:32:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141746502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:32:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578302929] [2024-09-12 21:32:59,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:32:59,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:32:59,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:32:59,309 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:32:59,310 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-12 21:32:59,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 21:32:59,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:32:59,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:32:59,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:32:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:32:59,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:00,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578302929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:00,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:00,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 56 [2024-09-12 21:33:00,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938579041] [2024-09-12 21:33:00,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:00,265 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 21:33:00,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 21:33:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=2543, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:33:00,266 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 56 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:00,892 INFO L93 Difference]: Finished difference Result 273 states and 314 transitions. [2024-09-12 21:33:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:00,893 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:00,894 INFO L225 Difference]: With dead ends: 273 [2024-09-12 21:33:00,894 INFO L226 Difference]: Without dead ends: 226 [2024-09-12 21:33:00,895 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 200 SyntacticMatches, 26 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=545, Invalid=2647, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:33:00,895 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:00,895 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 346 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-09-12 21:33:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 140. [2024-09-12 21:33:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:33:01,012 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:33:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:01,012 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:33:01,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:01,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:33:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:33:01,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:01,013 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:01,024 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:01,213 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:01,213 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:01,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash 3929782, now seen corresponding path program 61 times [2024-09-12 21:33:01,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:01,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413933223] [2024-09-12 21:33:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:33:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:33:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:33:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:33:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:33:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:33:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:33:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:33:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:33:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:33:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:33:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 212 proven. 76 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:01,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:01,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413933223] [2024-09-12 21:33:01,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413933223] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14811089] [2024-09-12 21:33:01,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:01,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:01,556 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:01,557 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-12 21:33:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:01,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:33:01,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 246 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:02,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 246 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:02,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14811089] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:02,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:02,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 55 [2024-09-12 21:33:02,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958806189] [2024-09-12 21:33:02,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:02,518 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 21:33:02,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 21:33:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=2453, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:33:02,519 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 55 states, 55 states have (on average 1.709090909090909) internal successors, (94), 55 states have internal predecessors, (94), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:03,142 INFO L93 Difference]: Finished difference Result 274 states and 315 transitions. [2024-09-12 21:33:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:03,142 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.709090909090909) internal successors, (94), 55 states have internal predecessors, (94), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:03,144 INFO L225 Difference]: With dead ends: 274 [2024-09-12 21:33:03,144 INFO L226 Difference]: Without dead ends: 227 [2024-09-12 21:33:03,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 201 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=525, Invalid=2555, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:33:03,145 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:03,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 303 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-12 21:33:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 140. [2024-09-12 21:33:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:33:03,261 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:33:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:03,261 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:33:03,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.709090909090909) internal successors, (94), 55 states have internal predecessors, (94), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:03,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:33:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:33:03,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:03,262 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:03,273 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2024-09-12 21:33:03,462 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2024-09-12 21:33:03,462 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:03,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:03,462 INFO L85 PathProgramCache]: Analyzing trace with hash -450639499, now seen corresponding path program 62 times [2024-09-12 21:33:03,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:03,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853294976] [2024-09-12 21:33:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:03,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:33:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:33:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:33:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:33:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:33:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:33:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:33:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:33:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:33:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:33:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:33:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 212 proven. 77 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:03,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:03,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853294976] [2024-09-12 21:33:03,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853294976] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213698599] [2024-09-12 21:33:03,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:33:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:03,905 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:03,906 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-09-12 21:33:03,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:33:03,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:03,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:33:03,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:04,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:04,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213698599] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:04,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:04,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 54 [2024-09-12 21:33:04,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35961247] [2024-09-12 21:33:04,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:04,759 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 21:33:04,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:04,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 21:33:04,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=2361, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 21:33:04,760 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:05,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:05,450 INFO L93 Difference]: Finished difference Result 273 states and 314 transitions. [2024-09-12 21:33:05,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:05,450 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:05,452 INFO L225 Difference]: With dead ends: 273 [2024-09-12 21:33:05,452 INFO L226 Difference]: Without dead ends: 226 [2024-09-12 21:33:05,452 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 202 SyntacticMatches, 26 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=509, Invalid=2461, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:33:05,452 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:05,452 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 475 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-09-12 21:33:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 140. [2024-09-12 21:33:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:33:05,559 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:33:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:05,559 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:33:05,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:05,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:33:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:33:05,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:05,560 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:05,571 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:05,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-09-12 21:33:05,760 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:05,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1890001622, now seen corresponding path program 63 times [2024-09-12 21:33:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:05,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041014074] [2024-09-12 21:33:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:33:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:33:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:33:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:33:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:33:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:33:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:33:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:33:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:33:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:33:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:33:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 212 proven. 80 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041014074] [2024-09-12 21:33:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041014074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039153133] [2024-09-12 21:33:06,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:33:06,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:06,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:06,099 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:06,100 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-09-12 21:33:06,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-12 21:33:06,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:06,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:33:06,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:06,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:06,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039153133] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:06,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:06,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 53 [2024-09-12 21:33:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485810830] [2024-09-12 21:33:06,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:06,937 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 21:33:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 21:33:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=2267, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:33:06,938 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 states have internal predecessors, (92), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:07,560 INFO L93 Difference]: Finished difference Result 270 states and 311 transitions. [2024-09-12 21:33:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 states have internal predecessors, (92), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:07,561 INFO L225 Difference]: With dead ends: 270 [2024-09-12 21:33:07,561 INFO L226 Difference]: Without dead ends: 223 [2024-09-12 21:33:07,562 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 203 SyntacticMatches, 26 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=497, Invalid=2365, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 21:33:07,562 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:07,562 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 358 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-09-12 21:33:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 140. [2024-09-12 21:33:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:33:07,683 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:33:07,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:07,683 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:33:07,683 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 states have internal predecessors, (92), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:07,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:07,683 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:33:07,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:33:07,684 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:07,684 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:07,696 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-09-12 21:33:07,884 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,99 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:07,884 INFO L399 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:07,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash 580032853, now seen corresponding path program 64 times [2024-09-12 21:33:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046969601] [2024-09-12 21:33:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:33:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:33:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:33:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:33:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:33:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:33:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:33:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:33:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:33:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:33:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:33:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 212 proven. 85 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046969601] [2024-09-12 21:33:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046969601] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629722292] [2024-09-12 21:33:08,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:33:08,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:08,275 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:08,275 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-09-12 21:33:08,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:33:08,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:08,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:33:08,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:08,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:09,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629722292] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:09,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:09,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 52 [2024-09-12 21:33:09,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877522129] [2024-09-12 21:33:09,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:09,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 21:33:09,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 21:33:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=2171, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:33:09,112 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:09,673 INFO L93 Difference]: Finished difference Result 265 states and 306 transitions. [2024-09-12 21:33:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:09,673 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:09,675 INFO L225 Difference]: With dead ends: 265 [2024-09-12 21:33:09,675 INFO L226 Difference]: Without dead ends: 218 [2024-09-12 21:33:09,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 204 SyntacticMatches, 26 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=489, Invalid=2267, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:33:09,676 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:09,676 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 279 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-09-12 21:33:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 140. [2024-09-12 21:33:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:33:09,794 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:33:09,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:09,794 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:33:09,794 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:09,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:09,794 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:33:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:33:09,795 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:09,795 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:09,806 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-09-12 21:33:09,995 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-09-12 21:33:09,995 INFO L399 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:09,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1540434186, now seen corresponding path program 65 times [2024-09-12 21:33:09,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:09,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992829009] [2024-09-12 21:33:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:09,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:33:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:33:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:33:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:33:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:33:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:33:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:33:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:33:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:33:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:33:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:33:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 212 proven. 92 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:10,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992829009] [2024-09-12 21:33:10,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992829009] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:10,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460041119] [2024-09-12 21:33:10,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:33:10,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:10,440 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:10,440 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-09-12 21:33:10,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 21:33:10,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:10,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:33:10,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:10,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:11,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460041119] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:11,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:11,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 51 [2024-09-12 21:33:11,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629953694] [2024-09-12 21:33:11,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:11,248 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 21:33:11,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:11,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 21:33:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=2073, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:33:11,249 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 51 states have internal predecessors, (90), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:11,793 INFO L93 Difference]: Finished difference Result 258 states and 299 transitions. [2024-09-12 21:33:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:11,793 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 51 states have internal predecessors, (90), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:11,795 INFO L225 Difference]: With dead ends: 258 [2024-09-12 21:33:11,795 INFO L226 Difference]: Without dead ends: 211 [2024-09-12 21:33:11,795 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 205 SyntacticMatches, 26 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=2167, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:33:11,795 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:11,795 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 299 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-12 21:33:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 140. [2024-09-12 21:33:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:33:11,906 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:33:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:11,906 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:33:11,906 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 51 states have internal predecessors, (90), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:11,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:33:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:33:11,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:11,907 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:11,921 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-09-12 21:33:12,108 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-09-12 21:33:12,108 INFO L399 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:12,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash 53731637, now seen corresponding path program 66 times [2024-09-12 21:33:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:12,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721132491] [2024-09-12 21:33:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:33:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:33:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:33:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:33:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:33:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:33:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:33:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:33:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:33:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:33:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:33:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 212 proven. 101 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:12,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721132491] [2024-09-12 21:33:12,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721132491] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158063354] [2024-09-12 21:33:12,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:33:12,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:12,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:12,443 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:12,444 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-09-12 21:33:12,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 21:33:12,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:12,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:33:12,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:12,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:13,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158063354] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:13,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:13,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 50 [2024-09-12 21:33:13,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471993021] [2024-09-12 21:33:13,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:13,247 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 21:33:13,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 21:33:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=1973, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:33:13,248 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 50 states, 50 states have (on average 1.78) internal successors, (89), 50 states have internal predecessors, (89), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:13,716 INFO L93 Difference]: Finished difference Result 249 states and 290 transitions. [2024-09-12 21:33:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:13,716 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.78) internal successors, (89), 50 states have internal predecessors, (89), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:13,717 INFO L225 Difference]: With dead ends: 249 [2024-09-12 21:33:13,718 INFO L226 Difference]: Without dead ends: 202 [2024-09-12 21:33:13,718 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 206 SyntacticMatches, 26 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=2065, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:33:13,718 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:13,718 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 306 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-09-12 21:33:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2024-09-12 21:33:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-12 21:33:13,826 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-12 21:33:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:13,826 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-12 21:33:13,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.78) internal successors, (89), 50 states have internal predecessors, (89), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:13,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-12 21:33:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-12 21:33:13,827 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:13,827 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:13,843 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-09-12 21:33:14,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-09-12 21:33:14,027 INFO L399 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:14,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:14,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1213534998, now seen corresponding path program 12 times [2024-09-12 21:33:14,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:14,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538564279] [2024-09-12 21:33:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:14,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:33:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:33:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:33:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:33:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:33:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:33:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:33:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:33:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:33:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:33:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:33:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:33:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:14,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538564279] [2024-09-12 21:33:14,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538564279] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763397591] [2024-09-12 21:33:14,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:33:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:14,373 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:14,374 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-09-12 21:33:14,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 21:33:14,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:14,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:33:14,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:14,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:15,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763397591] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:15,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:15,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 49 [2024-09-12 21:33:15,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828633407] [2024-09-12 21:33:15,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:15,162 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 21:33:15,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:15,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 21:33:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=1871, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 21:33:15,163 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:15,567 INFO L93 Difference]: Finished difference Result 241 states and 283 transitions. [2024-09-12 21:33:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:33:15,568 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-12 21:33:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:15,569 INFO L225 Difference]: With dead ends: 241 [2024-09-12 21:33:15,569 INFO L226 Difference]: Without dead ends: 194 [2024-09-12 21:33:15,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 207 SyntacticMatches, 26 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1412 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=489, Invalid=1961, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 21:33:15,570 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:15,570 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 252 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-12 21:33:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 142. [2024-09-12 21:33:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 113 states have internal predecessors, (128), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2024-09-12 21:33:15,680 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 112 [2024-09-12 21:33:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:15,680 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2024-09-12 21:33:15,680 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:33:15,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:15,681 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2024-09-12 21:33:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-12 21:33:15,681 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:15,681 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:15,693 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-09-12 21:33:15,881 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-09-12 21:33:15,882 INFO L399 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:15,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash -51276607, now seen corresponding path program 24 times [2024-09-12 21:33:15,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:15,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927759574] [2024-09-12 21:33:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:15,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:16,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:16,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927759574] [2024-09-12 21:33:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927759574] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:16,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912250210] [2024-09-12 21:33:16,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:33:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:16,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:16,090 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:16,091 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-09-12 21:33:16,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 21:33:16,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:16,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:16,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:16,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:33:16,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912250210] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:16,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:16,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-12 21:33:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360401514] [2024-09-12 21:33:16,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:16,413 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 21:33:16,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 21:33:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-12 21:33:16,414 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 19 states have internal predecessors, (60), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:33:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:16,641 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2024-09-12 21:33:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 21:33:16,641 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 19 states have internal predecessors, (60), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 113 [2024-09-12 21:33:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:16,643 INFO L225 Difference]: With dead ends: 155 [2024-09-12 21:33:16,643 INFO L226 Difference]: Without dead ends: 153 [2024-09-12 21:33:16,643 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 236 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-12 21:33:16,643 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 33 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:16,643 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 329 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-12 21:33:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2024-09-12 21:33:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 118 states have internal predecessors, (133), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2024-09-12 21:33:16,751 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 113 [2024-09-12 21:33:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:16,751 INFO L474 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2024-09-12 21:33:16,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 19 states have internal predecessors, (60), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:33:16,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2024-09-12 21:33:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:16,752 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:16,752 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:16,764 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:16,952 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-09-12 21:33:16,952 INFO L399 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:16,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash 827365751, now seen corresponding path program 25 times [2024-09-12 21:33:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:16,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555351457] [2024-09-12 21:33:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:17,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555351457] [2024-09-12 21:33:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555351457] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141089482] [2024-09-12 21:33:17,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:17,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:17,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:17,350 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:17,350 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-09-12 21:33:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:17,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:17,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:18,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141089482] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:18,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2024-09-12 21:33:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697356083] [2024-09-12 21:33:18,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:18,456 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-12 21:33:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-12 21:33:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=3369, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:33:18,456 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 65 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 65 states have internal predecessors, (106), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:18,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:18,865 INFO L93 Difference]: Finished difference Result 255 states and 299 transitions. [2024-09-12 21:33:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:18,865 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 65 states have internal predecessors, (106), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:18,867 INFO L225 Difference]: With dead ends: 255 [2024-09-12 21:33:18,867 INFO L226 Difference]: Without dead ends: 205 [2024-09-12 21:33:18,868 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 209 SyntacticMatches, 28 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3383 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=799, Invalid=3491, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:33:18,868 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:18,868 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 326 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:18,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-12 21:33:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 150. [2024-09-12 21:33:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:18,995 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:18,995 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:18,995 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 65 states have internal predecessors, (106), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:18,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:18,996 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:18,996 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:19,008 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:19,196 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:19,197 INFO L399 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:19,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:19,197 INFO L85 PathProgramCache]: Analyzing trace with hash -36359690, now seen corresponding path program 67 times [2024-09-12 21:33:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:19,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695067173] [2024-09-12 21:33:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 249 proven. 116 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:19,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695067173] [2024-09-12 21:33:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695067173] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295019108] [2024-09-12 21:33:19,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:19,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:19,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:19,584 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:19,585 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-09-12 21:33:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:19,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:19,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:20,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:20,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295019108] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:20,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:20,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2024-09-12 21:33:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342038770] [2024-09-12 21:33:20,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:20,679 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 21:33:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 21:33:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=3284, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:33:20,680 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 64 states, 64 states have (on average 1.640625) internal successors, (105), 64 states have internal predecessors, (105), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:21,279 INFO L93 Difference]: Finished difference Result 267 states and 311 transitions. [2024-09-12 21:33:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.640625) internal successors, (105), 64 states have internal predecessors, (105), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:21,281 INFO L225 Difference]: With dead ends: 267 [2024-09-12 21:33:21,281 INFO L226 Difference]: Without dead ends: 217 [2024-09-12 21:33:21,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 210 SyntacticMatches, 28 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3279 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=756, Invalid=3404, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:33:21,282 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:21,282 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 485 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-12 21:33:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 150. [2024-09-12 21:33:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:21,412 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:21,412 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:21,412 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.640625) internal successors, (105), 64 states have internal predecessors, (105), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:21,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:21,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:21,413 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:21,424 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2024-09-12 21:33:21,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2024-09-12 21:33:21,613 INFO L399 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:21,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash -64221801, now seen corresponding path program 68 times [2024-09-12 21:33:21,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:21,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125335692] [2024-09-12 21:33:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:21,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 249 proven. 106 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:22,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125335692] [2024-09-12 21:33:22,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125335692] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084169710] [2024-09-12 21:33:22,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:33:22,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:22,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:22,005 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:22,005 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-09-12 21:33:22,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:33:22,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:22,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:22,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:22,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084169710] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:23,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2024-09-12 21:33:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964837500] [2024-09-12 21:33:23,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:23,060 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-09-12 21:33:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-09-12 21:33:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=3197, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:33:23,061 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 63 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:23,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:23,729 INFO L93 Difference]: Finished difference Result 277 states and 321 transitions. [2024-09-12 21:33:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:23,730 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:23,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:23,731 INFO L225 Difference]: With dead ends: 277 [2024-09-12 21:33:23,731 INFO L226 Difference]: Without dead ends: 227 [2024-09-12 21:33:23,732 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 211 SyntacticMatches, 28 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=717, Invalid=3315, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:33:23,732 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:23,732 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 388 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:23,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-12 21:33:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 150. [2024-09-12 21:33:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:23,867 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:23,867 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:23,867 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:23,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:23,868 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:23,868 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:23,880 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-09-12 21:33:24,068 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,107 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:24,068 INFO L399 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:24,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash 766163414, now seen corresponding path program 69 times [2024-09-12 21:33:24,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:24,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694205553] [2024-09-12 21:33:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 249 proven. 98 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:24,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694205553] [2024-09-12 21:33:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694205553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:24,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042289348] [2024-09-12 21:33:24,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:33:24,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:24,454 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:24,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-09-12 21:33:24,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-12 21:33:24,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:24,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:24,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:25,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:25,484 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:25,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042289348] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:25,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 62 [2024-09-12 21:33:25,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696005539] [2024-09-12 21:33:25,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:25,485 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 21:33:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:25,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 21:33:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=3108, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:33:25,486 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 62 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 62 states have internal predecessors, (103), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:26,300 INFO L93 Difference]: Finished difference Result 285 states and 329 transitions. [2024-09-12 21:33:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:26,300 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 62 states have internal predecessors, (103), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:26,302 INFO L225 Difference]: With dead ends: 285 [2024-09-12 21:33:26,302 INFO L226 Difference]: Without dead ends: 235 [2024-09-12 21:33:26,302 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 212 SyntacticMatches, 28 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2972 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=682, Invalid=3224, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:33:26,303 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:26,303 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 532 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:33:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-12 21:33:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2024-09-12 21:33:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:26,449 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:26,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:26,449 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:26,449 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 62 states have internal predecessors, (103), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:26,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:26,449 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:26,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:26,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:26,450 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:26,461 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:26,650 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,108 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:26,650 INFO L399 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:26,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2039876023, now seen corresponding path program 70 times [2024-09-12 21:33:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:26,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120164926] [2024-09-12 21:33:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 249 proven. 92 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:27,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:27,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120164926] [2024-09-12 21:33:27,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120164926] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:27,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034837518] [2024-09-12 21:33:27,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:33:27,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:27,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:27,074 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:27,075 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-09-12 21:33:27,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:33:27,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:27,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:27,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:27,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:28,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034837518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:28,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:28,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 61 [2024-09-12 21:33:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745773683] [2024-09-12 21:33:28,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:28,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-12 21:33:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-12 21:33:28,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=3017, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:33:28,089 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 61 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:28,906 INFO L93 Difference]: Finished difference Result 291 states and 335 transitions. [2024-09-12 21:33:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:28,906 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:28,908 INFO L225 Difference]: With dead ends: 291 [2024-09-12 21:33:28,908 INFO L226 Difference]: Without dead ends: 241 [2024-09-12 21:33:28,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 213 SyntacticMatches, 28 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=651, Invalid=3131, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:33:28,909 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:28,909 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 415 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-09-12 21:33:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 150. [2024-09-12 21:33:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:29,052 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:29,052 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:29,052 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:29,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:29,052 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:29,053 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:29,064 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2024-09-12 21:33:29,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2024-09-12 21:33:29,253 INFO L399 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:29,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1526774198, now seen corresponding path program 71 times [2024-09-12 21:33:29,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:29,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130602461] [2024-09-12 21:33:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 249 proven. 88 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:29,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:29,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130602461] [2024-09-12 21:33:29,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130602461] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:29,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103035236] [2024-09-12 21:33:29,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:33:29,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:29,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:29,638 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:29,639 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-09-12 21:33:29,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-12 21:33:29,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:29,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:29,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:30,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:30,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103035236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:30,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:30,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 60 [2024-09-12 21:33:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127412415] [2024-09-12 21:33:30,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:30,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 21:33:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 21:33:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=2924, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:33:30,678 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 60 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:31,545 INFO L93 Difference]: Finished difference Result 295 states and 339 transitions. [2024-09-12 21:33:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:31,546 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:31,547 INFO L225 Difference]: With dead ends: 295 [2024-09-12 21:33:31,547 INFO L226 Difference]: Without dead ends: 245 [2024-09-12 21:33:31,547 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 214 SyntacticMatches, 28 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=624, Invalid=3036, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:33:31,548 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:31,548 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 483 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-12 21:33:31,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 150. [2024-09-12 21:33:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:31,691 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:31,691 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:31,692 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:31,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:31,692 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:31,692 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:31,704 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2024-09-12 21:33:31,892 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2024-09-12 21:33:31,893 INFO L399 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:31,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1953460777, now seen corresponding path program 72 times [2024-09-12 21:33:31,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:31,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592981517] [2024-09-12 21:33:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:31,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 249 proven. 86 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592981517] [2024-09-12 21:33:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592981517] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30480631] [2024-09-12 21:33:32,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:33:32,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:32,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:32,275 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:32,275 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-09-12 21:33:32,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-12 21:33:32,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:32,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:32,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:32,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30480631] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:33,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 59 [2024-09-12 21:33:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824658227] [2024-09-12 21:33:33,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:33,253 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 21:33:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 21:33:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=2829, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:33:33,258 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 59 states, 59 states have (on average 1.694915254237288) internal successors, (100), 59 states have internal predecessors, (100), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:34,118 INFO L93 Difference]: Finished difference Result 297 states and 341 transitions. [2024-09-12 21:33:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:34,119 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.694915254237288) internal successors, (100), 59 states have internal predecessors, (100), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:34,120 INFO L225 Difference]: With dead ends: 297 [2024-09-12 21:33:34,121 INFO L226 Difference]: Without dead ends: 247 [2024-09-12 21:33:34,121 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 215 SyntacticMatches, 28 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=601, Invalid=2939, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:33:34,121 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:34,121 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 432 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-12 21:33:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 150. [2024-09-12 21:33:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:34,273 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:34,273 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:34,273 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.694915254237288) internal successors, (100), 59 states have internal predecessors, (100), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:34,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:34,274 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:34,274 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:34,286 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-09-12 21:33:34,474 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:34,474 INFO L399 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:34,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1536504214, now seen corresponding path program 73 times [2024-09-12 21:33:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:34,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078936424] [2024-09-12 21:33:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:34,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 249 proven. 86 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:34,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078936424] [2024-09-12 21:33:34,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078936424] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730097275] [2024-09-12 21:33:34,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:34,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:34,849 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:34,849 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-09-12 21:33:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:34,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:34,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:35,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730097275] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:35,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:35,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 58 [2024-09-12 21:33:35,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939711125] [2024-09-12 21:33:35,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:35,800 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 21:33:35,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 21:33:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=2732, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:33:35,801 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 58 states, 58 states have (on average 1.706896551724138) internal successors, (99), 58 states have internal predecessors, (99), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:36,683 INFO L93 Difference]: Finished difference Result 297 states and 341 transitions. [2024-09-12 21:33:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.706896551724138) internal successors, (99), 58 states have internal predecessors, (99), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:36,685 INFO L225 Difference]: With dead ends: 297 [2024-09-12 21:33:36,685 INFO L226 Difference]: Without dead ends: 247 [2024-09-12 21:33:36,685 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 216 SyntacticMatches, 28 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=582, Invalid=2840, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:33:36,685 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:36,685 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 381 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-12 21:33:36,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 150. [2024-09-12 21:33:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:36,832 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:36,832 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:36,832 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.706896551724138) internal successors, (99), 58 states have internal predecessors, (99), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:36,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:36,833 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:36,833 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:36,844 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2024-09-12 21:33:37,033 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2024-09-12 21:33:37,034 INFO L399 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:37,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1398957577, now seen corresponding path program 74 times [2024-09-12 21:33:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:37,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334623996] [2024-09-12 21:33:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:37,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 249 proven. 88 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:37,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334623996] [2024-09-12 21:33:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334623996] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745047389] [2024-09-12 21:33:37,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:33:37,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:37,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:37,421 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:37,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-09-12 21:33:37,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:33:37,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:37,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:37,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:38,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:38,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745047389] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:38,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:38,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 57 [2024-09-12 21:33:38,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200734463] [2024-09-12 21:33:38,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:38,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 21:33:38,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 21:33:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=2633, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:33:38,367 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 57 states, 57 states have (on average 1.719298245614035) internal successors, (98), 57 states have internal predecessors, (98), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:39,208 INFO L93 Difference]: Finished difference Result 295 states and 339 transitions. [2024-09-12 21:33:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:39,208 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.719298245614035) internal successors, (98), 57 states have internal predecessors, (98), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:39,210 INFO L225 Difference]: With dead ends: 295 [2024-09-12 21:33:39,210 INFO L226 Difference]: Without dead ends: 245 [2024-09-12 21:33:39,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 217 SyntacticMatches, 28 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=567, Invalid=2739, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:33:39,210 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:39,211 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 303 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-12 21:33:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 150. [2024-09-12 21:33:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:39,350 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:39,351 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:39,351 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.719298245614035) internal successors, (98), 57 states have internal predecessors, (98), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:39,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:39,351 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:39,351 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:39,364 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:39,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-09-12 21:33:39,552 INFO L399 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:39,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1554391414, now seen corresponding path program 75 times [2024-09-12 21:33:39,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:39,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047430693] [2024-09-12 21:33:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:39,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 249 proven. 92 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047430693] [2024-09-12 21:33:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047430693] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32443394] [2024-09-12 21:33:39,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:33:39,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:39,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:39,925 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:39,926 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-09-12 21:33:39,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-12 21:33:39,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:39,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:39,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:40,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:40,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32443394] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:40,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:40,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 56 [2024-09-12 21:33:40,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312510383] [2024-09-12 21:33:40,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:40,849 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 21:33:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 21:33:40,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=2532, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:33:40,849 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 56 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 56 states have internal predecessors, (97), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:41,677 INFO L93 Difference]: Finished difference Result 291 states and 335 transitions. [2024-09-12 21:33:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 56 states have internal predecessors, (97), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:41,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:41,679 INFO L225 Difference]: With dead ends: 291 [2024-09-12 21:33:41,679 INFO L226 Difference]: Without dead ends: 241 [2024-09-12 21:33:41,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 218 SyntacticMatches, 28 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=556, Invalid=2636, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:33:41,679 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:41,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 393 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-09-12 21:33:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 150. [2024-09-12 21:33:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:41,826 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:41,826 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:41,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 56 states have internal predecessors, (97), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:41,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:41,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:41,826 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:41,838 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-09-12 21:33:42,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2024-09-12 21:33:42,027 INFO L399 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:42,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash 264187415, now seen corresponding path program 76 times [2024-09-12 21:33:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:42,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799841297] [2024-09-12 21:33:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:42,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 249 proven. 98 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:42,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799841297] [2024-09-12 21:33:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799841297] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:42,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819853821] [2024-09-12 21:33:42,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:33:42,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:42,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:42,401 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:42,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-09-12 21:33:42,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:33:42,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:42,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:42,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:42,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819853821] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:43,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:43,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 55 [2024-09-12 21:33:43,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731867285] [2024-09-12 21:33:43,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:43,309 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 21:33:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 21:33:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2429, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:33:43,310 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:44,072 INFO L93 Difference]: Finished difference Result 285 states and 329 transitions. [2024-09-12 21:33:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:44,074 INFO L225 Difference]: With dead ends: 285 [2024-09-12 21:33:44,074 INFO L226 Difference]: Without dead ends: 235 [2024-09-12 21:33:44,075 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 219 SyntacticMatches, 28 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1992 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=549, Invalid=2531, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:33:44,075 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:44,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 324 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-12 21:33:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2024-09-12 21:33:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:44,233 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:44,233 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:44,234 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:44,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:44,234 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:44,234 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:44,245 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2024-09-12 21:33:44,434 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-09-12 21:33:44,435 INFO L399 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:44,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:44,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1024358058, now seen corresponding path program 77 times [2024-09-12 21:33:44,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:44,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59659892] [2024-09-12 21:33:44,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:44,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 249 proven. 106 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59659892] [2024-09-12 21:33:44,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59659892] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:44,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544310251] [2024-09-12 21:33:44,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:33:44,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:44,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:44,808 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:44,808 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-09-12 21:33:44,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-12 21:33:44,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:44,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:44,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:45,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:45,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544310251] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:45,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:45,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 54 [2024-09-12 21:33:45,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893565265] [2024-09-12 21:33:45,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:45,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 21:33:45,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 21:33:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2324, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 21:33:45,706 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 54 states have internal predecessors, (95), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:46,374 INFO L93 Difference]: Finished difference Result 277 states and 321 transitions. [2024-09-12 21:33:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:46,374 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 54 states have internal predecessors, (95), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:46,375 INFO L225 Difference]: With dead ends: 277 [2024-09-12 21:33:46,376 INFO L226 Difference]: Without dead ends: 227 [2024-09-12 21:33:46,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 220 SyntacticMatches, 28 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=546, Invalid=2424, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:33:46,376 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:46,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 276 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-12 21:33:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 150. [2024-09-12 21:33:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:46,529 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:46,530 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:46,530 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 54 states have internal predecessors, (95), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:46,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:46,530 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:46,530 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:46,542 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2024-09-12 21:33:46,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2024-09-12 21:33:46,731 INFO L399 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:46,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1065924041, now seen corresponding path program 78 times [2024-09-12 21:33:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429135470] [2024-09-12 21:33:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 249 proven. 116 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:47,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:47,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429135470] [2024-09-12 21:33:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429135470] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:47,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202264907] [2024-09-12 21:33:47,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:33:47,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:47,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:47,139 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:47,139 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-09-12 21:33:47,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-12 21:33:47,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:47,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:47,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:47,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:48,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202264907] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:48,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:48,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 53 [2024-09-12 21:33:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004517942] [2024-09-12 21:33:48,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:48,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 21:33:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 21:33:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2217, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:33:48,021 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 53 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 53 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:48,619 INFO L93 Difference]: Finished difference Result 267 states and 311 transitions. [2024-09-12 21:33:48,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:48,620 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 53 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:48,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:48,621 INFO L225 Difference]: With dead ends: 267 [2024-09-12 21:33:48,621 INFO L226 Difference]: Without dead ends: 217 [2024-09-12 21:33:48,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 221 SyntacticMatches, 28 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1739 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=2315, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 21:33:48,622 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:48,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 358 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-12 21:33:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 150. [2024-09-12 21:33:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-12 21:33:48,779 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-12 21:33:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:48,779 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-12 21:33:48,779 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 53 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:48,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-12 21:33:48,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-12 21:33:48,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:48,780 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:48,791 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-09-12 21:33:48,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:48,980 INFO L399 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 179661110, now seen corresponding path program 13 times [2024-09-12 21:33:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873740578] [2024-09-12 21:33:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:33:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:33:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:33:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:33:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:33:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:33:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:33:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:33:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:33:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:33:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:33:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:33:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:33:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:49,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873740578] [2024-09-12 21:33:49,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873740578] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:49,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621824555] [2024-09-12 21:33:49,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:49,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:49,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:49,362 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:49,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-09-12 21:33:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:49,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:33:49,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:49,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:50,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621824555] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:50,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:50,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 52 [2024-09-12 21:33:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349164118] [2024-09-12 21:33:50,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:50,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 21:33:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 21:33:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=2108, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 21:33:50,303 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 52 states have internal predecessors, (93), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:50,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:50,809 INFO L93 Difference]: Finished difference Result 258 states and 303 transitions. [2024-09-12 21:33:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:33:50,809 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 52 states have internal predecessors, (93), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-12 21:33:50,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:50,811 INFO L225 Difference]: With dead ends: 258 [2024-09-12 21:33:50,811 INFO L226 Difference]: Without dead ends: 208 [2024-09-12 21:33:50,811 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 222 SyntacticMatches, 28 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=552, Invalid=2204, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:33:50,811 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:50,811 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 389 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-12 21:33:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2024-09-12 21:33:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 121 states have internal predecessors, (137), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:33:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2024-09-12 21:33:50,964 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 120 [2024-09-12 21:33:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:50,964 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2024-09-12 21:33:50,964 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 52 states have internal predecessors, (93), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:33:50,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2024-09-12 21:33:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-12 21:33:50,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:50,965 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:50,977 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:51,165 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:51,165 INFO L399 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:51,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1632046878, now seen corresponding path program 26 times [2024-09-12 21:33:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084875539] [2024-09-12 21:33:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:33:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:33:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:33:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:33:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:33:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:33:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:33:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:33:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:33:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:33:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:33:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:33:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:33:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084875539] [2024-09-12 21:33:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084875539] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717290661] [2024-09-12 21:33:51,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:33:51,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:51,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:51,406 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:51,407 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-09-12 21:33:51,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:33:51,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:51,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 21:33:51,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:51,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:33:51,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717290661] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:51,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:51,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-12 21:33:51,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939011355] [2024-09-12 21:33:51,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:51,765 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 21:33:51,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:51,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 21:33:51,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-12 21:33:51,766 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:52,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:52,034 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2024-09-12 21:33:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 21:33:52,034 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 121 [2024-09-12 21:33:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:52,035 INFO L225 Difference]: With dead ends: 165 [2024-09-12 21:33:52,035 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 21:33:52,035 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 251 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-12 21:33:52,036 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:52,036 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 317 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:33:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 21:33:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-12 21:33:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 125 states have (on average 1.136) internal successors, (142), 126 states have internal predecessors, (142), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:33:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 175 transitions. [2024-09-12 21:33:52,190 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 175 transitions. Word has length 121 [2024-09-12 21:33:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:52,190 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 175 transitions. [2024-09-12 21:33:52,190 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:33:52,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 175 transitions. [2024-09-12 21:33:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:33:52,191 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:52,191 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:52,202 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2024-09-12 21:33:52,391 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-09-12 21:33:52,391 INFO L399 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:52,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1580169674, now seen corresponding path program 27 times [2024-09-12 21:33:52,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:52,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626246047] [2024-09-12 21:33:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:33:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:33:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:33:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:33:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:33:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:33:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:33:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:33:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:33:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:33:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:33:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:33:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:33:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:33:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:52,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626246047] [2024-09-12 21:33:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626246047] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999708269] [2024-09-12 21:33:52,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:33:52,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:52,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:52,839 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:52,840 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-09-12 21:33:52,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-12 21:33:52,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:52,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:33:52,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:53,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:54,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999708269] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:54,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:54,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-09-12 21:33:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329005926] [2024-09-12 21:33:54,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:54,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-12 21:33:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-12 21:33:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=891, Invalid=3801, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:33:54,127 INFO L87 Difference]: Start difference. First operand 159 states and 175 transitions. Second operand has 69 states, 69 states have (on average 1.6231884057971016) internal successors, (112), 69 states have internal predecessors, (112), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:33:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:54,673 INFO L93 Difference]: Finished difference Result 272 states and 319 transitions. [2024-09-12 21:33:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:33:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.6231884057971016) internal successors, (112), 69 states have internal predecessors, (112), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:33:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:54,675 INFO L225 Difference]: With dead ends: 272 [2024-09-12 21:33:54,675 INFO L226 Difference]: Without dead ends: 219 [2024-09-12 21:33:54,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 223 SyntacticMatches, 30 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3858 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=899, Invalid=3931, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:33:54,675 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:54,675 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 320 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:33:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-12 21:33:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 160. [2024-09-12 21:33:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:33:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:33:54,849 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:33:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:54,849 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:33:54,849 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.6231884057971016) internal successors, (112), 69 states have internal predecessors, (112), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:33:54,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:33:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:33:54,850 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:54,850 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:54,861 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:55,050 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2024-09-12 21:33:55,051 INFO L399 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:55,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:55,051 INFO L85 PathProgramCache]: Analyzing trace with hash -634376267, now seen corresponding path program 79 times [2024-09-12 21:33:55,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:55,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432256392] [2024-09-12 21:33:55,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:55,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:33:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:33:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:33:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:33:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:33:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:33:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:33:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:33:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:33:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:33:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:33:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:33:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:33:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:33:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 289 proven. 132 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432256392] [2024-09-12 21:33:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432256392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111775096] [2024-09-12 21:33:55,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:33:55,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:55,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:55,494 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:55,495 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-09-12 21:33:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:55,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:33:55,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:56,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:56,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111775096] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:56,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:56,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 68 [2024-09-12 21:33:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100620931] [2024-09-12 21:33:56,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:56,675 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 21:33:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:56,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 21:33:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=845, Invalid=3711, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:33:56,676 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 68 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 68 states have internal predecessors, (111), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:33:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:33:57,505 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2024-09-12 21:33:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:33:57,506 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 68 states have internal predecessors, (111), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:33:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:33:57,508 INFO L225 Difference]: With dead ends: 285 [2024-09-12 21:33:57,508 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 21:33:57,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 224 SyntacticMatches, 30 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=853, Invalid=3839, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:33:57,508 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:33:57,509 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 514 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:33:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 21:33:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2024-09-12 21:33:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:33:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:33:57,757 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:33:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:33:57,758 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:33:57,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 68 states have internal predecessors, (111), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:33:57,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:33:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:33:57,759 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:33:57,759 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:33:57,775 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2024-09-12 21:33:57,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:57,959 INFO L399 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:33:57,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:33:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash -326772138, now seen corresponding path program 80 times [2024-09-12 21:33:57,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:33:57,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820193247] [2024-09-12 21:33:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:33:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:33:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:33:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:33:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:33:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:33:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:33:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:33:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:33:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:33:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:33:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:33:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:33:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:33:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:33:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:33:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:33:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:33:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 289 proven. 121 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:58,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:33:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820193247] [2024-09-12 21:33:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820193247] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:33:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415607282] [2024-09-12 21:33:58,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:33:58,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:33:58,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:33:58,400 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:33:58,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-09-12 21:33:58,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:33:58,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:33:58,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:33:58,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:33:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:59,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:33:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:33:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415607282] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:33:59,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:33:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 67 [2024-09-12 21:33:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446430898] [2024-09-12 21:33:59,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:33:59,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 21:33:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:33:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 21:33:59,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=3619, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:33:59,602 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 67 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 67 states have internal predecessors, (110), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:00,542 INFO L93 Difference]: Finished difference Result 296 states and 343 transitions. [2024-09-12 21:34:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 67 states have internal predecessors, (110), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:00,544 INFO L225 Difference]: With dead ends: 296 [2024-09-12 21:34:00,544 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 21:34:00,544 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 225 SyntacticMatches, 30 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3581 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=811, Invalid=3745, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:34:00,544 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:00,544 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 502 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:34:00,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 21:34:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 160. [2024-09-12 21:34:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:00,734 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:00,734 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:00,734 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 67 states have internal predecessors, (110), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:00,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:00,735 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:00,735 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:00,746 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-09-12 21:34:00,935 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:00,935 INFO L399 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash 930076565, now seen corresponding path program 81 times [2024-09-12 21:34:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:00,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145464312] [2024-09-12 21:34:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 289 proven. 112 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:01,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:01,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145464312] [2024-09-12 21:34:01,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145464312] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:01,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23385920] [2024-09-12 21:34:01,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:34:01,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:01,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:01,382 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:01,383 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-09-12 21:34:01,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-12 21:34:01,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:01,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:01,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:02,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:02,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23385920] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:02,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:02,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 66 [2024-09-12 21:34:02,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501316719] [2024-09-12 21:34:02,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:02,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-12 21:34:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-12 21:34:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=3525, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:34:02,560 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:03,563 INFO L93 Difference]: Finished difference Result 305 states and 352 transitions. [2024-09-12 21:34:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:03,565 INFO L225 Difference]: With dead ends: 305 [2024-09-12 21:34:03,566 INFO L226 Difference]: Without dead ends: 252 [2024-09-12 21:34:03,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 226 SyntacticMatches, 30 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=773, Invalid=3649, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:34:03,566 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:03,566 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 447 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-09-12 21:34:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 160. [2024-09-12 21:34:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:03,774 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:03,774 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:03,775 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:03,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:03,775 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:03,775 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:03,787 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2024-09-12 21:34:03,975 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,123 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:03,976 INFO L399 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:03,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -691947914, now seen corresponding path program 82 times [2024-09-12 21:34:03,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177546818] [2024-09-12 21:34:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 289 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177546818] [2024-09-12 21:34:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177546818] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170326651] [2024-09-12 21:34:04,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:34:04,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:04,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:04,454 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:04,454 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-09-12 21:34:04,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:34:04,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:04,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:04,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:05,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:05,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170326651] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:05,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:05,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 65 [2024-09-12 21:34:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027351827] [2024-09-12 21:34:05,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:05,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-12 21:34:05,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-12 21:34:05,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=3429, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:34:05,579 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 65 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 65 states have internal predecessors, (108), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:06,643 INFO L93 Difference]: Finished difference Result 312 states and 359 transitions. [2024-09-12 21:34:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 65 states have internal predecessors, (108), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:06,645 INFO L225 Difference]: With dead ends: 312 [2024-09-12 21:34:06,645 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 21:34:06,646 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 227 SyntacticMatches, 30 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3258 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=739, Invalid=3551, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:34:06,646 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:06,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 324 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 21:34:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 160. [2024-09-12 21:34:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:06,836 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:06,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:06,837 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:06,837 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 65 states have internal predecessors, (108), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:06,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:06,837 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:06,838 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:06,849 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-09-12 21:34:07,038 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,124 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:07,038 INFO L399 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash 641202037, now seen corresponding path program 83 times [2024-09-12 21:34:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583819709] [2024-09-12 21:34:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 289 proven. 100 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:07,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583819709] [2024-09-12 21:34:07,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583819709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405177378] [2024-09-12 21:34:07,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:34:07,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:07,466 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:07,467 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-09-12 21:34:07,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-09-12 21:34:07,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:07,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:07,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:08,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:08,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405177378] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:08,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:08,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 64 [2024-09-12 21:34:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724333161] [2024-09-12 21:34:08,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:08,574 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 21:34:08,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:08,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 21:34:08,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=3331, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:34:08,575 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 64 states, 64 states have (on average 1.671875) internal successors, (107), 64 states have internal predecessors, (107), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:09,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:09,801 INFO L93 Difference]: Finished difference Result 317 states and 364 transitions. [2024-09-12 21:34:09,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:09,801 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.671875) internal successors, (107), 64 states have internal predecessors, (107), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:09,803 INFO L225 Difference]: With dead ends: 317 [2024-09-12 21:34:09,803 INFO L226 Difference]: Without dead ends: 264 [2024-09-12 21:34:09,803 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 228 SyntacticMatches, 30 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=709, Invalid=3451, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:34:09,803 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:09,804 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 550 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:34:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-12 21:34:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2024-09-12 21:34:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:09,997 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:09,997 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:09,997 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.671875) internal successors, (107), 64 states have internal predecessors, (107), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:09,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:09,998 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:09,998 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:10,010 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2024-09-12 21:34:10,198 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2024-09-12 21:34:10,198 INFO L399 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:10,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash 545659542, now seen corresponding path program 84 times [2024-09-12 21:34:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:10,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145748586] [2024-09-12 21:34:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 289 proven. 97 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145748586] [2024-09-12 21:34:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145748586] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:10,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242113669] [2024-09-12 21:34:10,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:34:10,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:10,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:10,661 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:10,662 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-09-12 21:34:10,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-09-12 21:34:10,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:10,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:10,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:11,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:11,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242113669] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:11,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:11,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 63 [2024-09-12 21:34:11,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912783718] [2024-09-12 21:34:11,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:11,757 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-09-12 21:34:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-09-12 21:34:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=3231, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:34:11,758 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:12,968 INFO L93 Difference]: Finished difference Result 320 states and 367 transitions. [2024-09-12 21:34:12,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:12,970 INFO L225 Difference]: With dead ends: 320 [2024-09-12 21:34:12,970 INFO L226 Difference]: Without dead ends: 267 [2024-09-12 21:34:12,970 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 229 SyntacticMatches, 30 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2947 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=683, Invalid=3349, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:34:12,970 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:12,970 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 487 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:12,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-12 21:34:13,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 160. [2024-09-12 21:34:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:13,169 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:13,169 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:13,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:13,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:13,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:13,170 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:13,181 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2024-09-12 21:34:13,370 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-09-12 21:34:13,370 INFO L399 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:13,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:13,370 INFO L85 PathProgramCache]: Analyzing trace with hash -565801131, now seen corresponding path program 85 times [2024-09-12 21:34:13,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41786730] [2024-09-12 21:34:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 289 proven. 96 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:13,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41786730] [2024-09-12 21:34:13,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41786730] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377045112] [2024-09-12 21:34:13,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:34:13,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:13,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:13,795 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:13,796 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2024-09-12 21:34:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:13,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:13,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 329 proven. 56 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:14,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 329 proven. 56 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377045112] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:14,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 62 [2024-09-12 21:34:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751516651] [2024-09-12 21:34:14,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:14,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 21:34:14,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 21:34:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=3129, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:34:14,854 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 62 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 62 states have internal predecessors, (105), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:16,074 INFO L93 Difference]: Finished difference Result 321 states and 368 transitions. [2024-09-12 21:34:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 62 states have internal predecessors, (105), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:16,076 INFO L225 Difference]: With dead ends: 321 [2024-09-12 21:34:16,076 INFO L226 Difference]: Without dead ends: 268 [2024-09-12 21:34:16,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 230 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=661, Invalid=3245, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:34:16,076 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:16,076 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 330 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-09-12 21:34:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 160. [2024-09-12 21:34:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:16,283 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:16,283 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:16,283 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 62 states have internal predecessors, (105), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:16,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:16,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:16,284 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:16,296 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2024-09-12 21:34:16,484 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,127 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:16,485 INFO L399 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:16,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1571486026, now seen corresponding path program 86 times [2024-09-12 21:34:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012195934] [2024-09-12 21:34:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 289 proven. 97 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:16,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:16,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012195934] [2024-09-12 21:34:16,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012195934] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637242238] [2024-09-12 21:34:16,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:34:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:16,910 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:16,912 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2024-09-12 21:34:16,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:34:16,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:16,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:16,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:17,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637242238] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:17,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:17,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 61 [2024-09-12 21:34:17,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098933936] [2024-09-12 21:34:17,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:17,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-12 21:34:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-12 21:34:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=3025, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:34:17,987 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 61 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 61 states have internal predecessors, (104), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:19,183 INFO L93 Difference]: Finished difference Result 320 states and 367 transitions. [2024-09-12 21:34:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:19,183 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 61 states have internal predecessors, (104), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:19,185 INFO L225 Difference]: With dead ends: 320 [2024-09-12 21:34:19,185 INFO L226 Difference]: Without dead ends: 267 [2024-09-12 21:34:19,186 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 231 SyntacticMatches, 30 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=643, Invalid=3139, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:34:19,186 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:19,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 281 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-12 21:34:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 160. [2024-09-12 21:34:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:19,387 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:19,387 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:19,387 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 61 states have internal predecessors, (104), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:19,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:19,388 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:19,388 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:19,400 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2024-09-12 21:34:19,591 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,128 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:19,591 INFO L399 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:19,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1859755829, now seen corresponding path program 87 times [2024-09-12 21:34:19,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:19,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416723326] [2024-09-12 21:34:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 289 proven. 100 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416723326] [2024-09-12 21:34:20,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416723326] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:20,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42714647] [2024-09-12 21:34:20,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:34:20,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:20,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:20,016 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:20,017 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2024-09-12 21:34:20,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-12 21:34:20,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:20,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:20,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:20,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42714647] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:21,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:21,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 60 [2024-09-12 21:34:21,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12217827] [2024-09-12 21:34:21,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:21,078 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 21:34:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:21,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 21:34:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=2919, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:34:21,079 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 60 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 60 states have internal predecessors, (103), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:22,266 INFO L93 Difference]: Finished difference Result 317 states and 364 transitions. [2024-09-12 21:34:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:22,266 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 60 states have internal predecessors, (103), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:22,268 INFO L225 Difference]: With dead ends: 317 [2024-09-12 21:34:22,268 INFO L226 Difference]: Without dead ends: 264 [2024-09-12 21:34:22,269 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 232 SyntacticMatches, 30 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2503 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=629, Invalid=3031, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:34:22,269 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:22,269 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 444 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-12 21:34:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2024-09-12 21:34:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:22,471 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:22,471 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:22,471 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 60 states have internal predecessors, (103), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:22,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:22,471 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:22,471 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:22,483 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2024-09-12 21:34:22,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2024-09-12 21:34:22,672 INFO L399 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:22,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:22,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1831893718, now seen corresponding path program 88 times [2024-09-12 21:34:22,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:22,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840584091] [2024-09-12 21:34:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:22,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 289 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:23,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:23,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840584091] [2024-09-12 21:34:23,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840584091] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:23,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091799161] [2024-09-12 21:34:23,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:34:23,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:23,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:23,097 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:23,098 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2024-09-12 21:34:23,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:34:23,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:23,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:23,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:23,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091799161] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:24,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 59 [2024-09-12 21:34:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868344839] [2024-09-12 21:34:24,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:24,110 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 21:34:24,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 21:34:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2811, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:34:24,111 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 59 states, 59 states have (on average 1.728813559322034) internal successors, (102), 59 states have internal predecessors, (102), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:25,223 INFO L93 Difference]: Finished difference Result 312 states and 359 transitions. [2024-09-12 21:34:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.728813559322034) internal successors, (102), 59 states have internal predecessors, (102), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:25,225 INFO L225 Difference]: With dead ends: 312 [2024-09-12 21:34:25,225 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 21:34:25,226 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 233 SyntacticMatches, 30 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=619, Invalid=2921, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:34:25,226 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:25,226 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 500 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 21:34:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 160. [2024-09-12 21:34:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:25,424 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:25,424 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:25,424 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.728813559322034) internal successors, (102), 59 states have internal predecessors, (102), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:25,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:25,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:25,425 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:25,437 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2024-09-12 21:34:25,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,130 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:25,625 INFO L399 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:25,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1632688363, now seen corresponding path program 89 times [2024-09-12 21:34:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:25,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190261927] [2024-09-12 21:34:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:25,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 289 proven. 112 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:26,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:26,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190261927] [2024-09-12 21:34:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190261927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:26,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391085964] [2024-09-12 21:34:26,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:34:26,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:26,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:26,046 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:26,047 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2024-09-12 21:34:26,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-09-12 21:34:26,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:26,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:26,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:26,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391085964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:27,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 58 [2024-09-12 21:34:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860275638] [2024-09-12 21:34:27,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:27,053 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 21:34:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 21:34:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2701, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:34:27,054 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 58 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 58 states have internal predecessors, (101), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:28,067 INFO L93 Difference]: Finished difference Result 305 states and 352 transitions. [2024-09-12 21:34:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:28,067 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 58 states have internal predecessors, (101), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:28,069 INFO L225 Difference]: With dead ends: 305 [2024-09-12 21:34:28,069 INFO L226 Difference]: Without dead ends: 252 [2024-09-12 21:34:28,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 234 SyntacticMatches, 30 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=613, Invalid=2809, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:34:28,069 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:28,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 368 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-09-12 21:34:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 160. [2024-09-12 21:34:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:28,275 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:28,275 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:28,276 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 58 states have internal predecessors, (101), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:28,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:28,276 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:28,276 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:28,288 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2024-09-12 21:34:28,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,131 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:28,477 INFO L399 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:28,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -358975754, now seen corresponding path program 90 times [2024-09-12 21:34:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410313366] [2024-09-12 21:34:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 289 proven. 121 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:28,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:28,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410313366] [2024-09-12 21:34:28,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410313366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:28,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290916565] [2024-09-12 21:34:28,892 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:34:28,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:28,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:28,893 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:28,893 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2024-09-12 21:34:28,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-09-12 21:34:28,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:28,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:28,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:29,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290916565] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:29,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:29,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 57 [2024-09-12 21:34:29,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872905080] [2024-09-12 21:34:29,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:29,882 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 21:34:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 21:34:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=2589, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:34:29,883 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:30,779 INFO L93 Difference]: Finished difference Result 296 states and 343 transitions. [2024-09-12 21:34:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:30,780 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:30,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:30,781 INFO L225 Difference]: With dead ends: 296 [2024-09-12 21:34:30,781 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 21:34:30,781 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 235 SyntacticMatches, 30 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2086 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=611, Invalid=2695, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:34:30,782 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:30,782 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 354 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 21:34:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 160. [2024-09-12 21:34:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:30,988 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:30,989 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:30,989 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:30,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:30,989 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:30,989 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:31,001 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2024-09-12 21:34:31,189 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,132 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:31,190 INFO L399 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:31,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:31,190 INFO L85 PathProgramCache]: Analyzing trace with hash -872077579, now seen corresponding path program 91 times [2024-09-12 21:34:31,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:31,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797217818] [2024-09-12 21:34:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:31,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 289 proven. 132 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:31,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797217818] [2024-09-12 21:34:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797217818] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027556531] [2024-09-12 21:34:31,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:34:31,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:31,610 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:31,611 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2024-09-12 21:34:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:31,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:31,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:32,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027556531] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:32,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:32,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2024-09-12 21:34:32,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229510202] [2024-09-12 21:34:32,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:32,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 21:34:32,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 21:34:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2475, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:34:32,579 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:33,388 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2024-09-12 21:34:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:33,391 INFO L225 Difference]: With dead ends: 285 [2024-09-12 21:34:33,391 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 21:34:33,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 236 SyntacticMatches, 30 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=613, Invalid=2579, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:34:33,391 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:33,391 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 364 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 21:34:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2024-09-12 21:34:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-12 21:34:33,630 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-12 21:34:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:33,631 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-12 21:34:33,631 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:33,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-12 21:34:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 21:34:33,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:33,631 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:33,643 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2024-09-12 21:34:33,832 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,133 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:33,832 INFO L399 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:33,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -57345258, now seen corresponding path program 14 times [2024-09-12 21:34:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:33,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027423444] [2024-09-12 21:34:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:33,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:34:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:34:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:34:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:34:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:34:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:34:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:34:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:34:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:34:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:34:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:34:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:34:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:34:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:34:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:34,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027423444] [2024-09-12 21:34:34,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027423444] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:34,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521312736] [2024-09-12 21:34:34,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:34:34,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:34,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:34,266 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:34,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2024-09-12 21:34:34,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:34:34,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:34,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 21:34:34,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:34,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521312736] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:35,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:35,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 55 [2024-09-12 21:34:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127295241] [2024-09-12 21:34:35,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:35,233 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 21:34:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 21:34:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2359, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 21:34:35,234 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 55 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 55 states have internal predecessors, (98), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:35,902 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2024-09-12 21:34:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 21:34:35,903 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 55 states have internal predecessors, (98), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-12 21:34:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:35,905 INFO L225 Difference]: With dead ends: 275 [2024-09-12 21:34:35,905 INFO L226 Difference]: Without dead ends: 222 [2024-09-12 21:34:35,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 237 SyntacticMatches, 30 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=619, Invalid=2461, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:34:35,905 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:35,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 567 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:35,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-09-12 21:34:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 162. [2024-09-12 21:34:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.140625) internal successors, (146), 129 states have internal predecessors, (146), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:34:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 179 transitions. [2024-09-12 21:34:36,114 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 179 transitions. Word has length 128 [2024-09-12 21:34:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:36,114 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 179 transitions. [2024-09-12 21:34:36,114 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 55 states have internal predecessors, (98), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:34:36,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 179 transitions. [2024-09-12 21:34:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-09-12 21:34:36,114 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:36,115 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:36,126 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2024-09-12 21:34:36,315 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2024-09-12 21:34:36,315 INFO L399 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:36,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1636582049, now seen corresponding path program 28 times [2024-09-12 21:34:36,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:36,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797750464] [2024-09-12 21:34:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:36,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797750464] [2024-09-12 21:34:36,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797750464] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:36,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103020220] [2024-09-12 21:34:36,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:34:36,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:36,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:36,564 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:36,565 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2024-09-12 21:34:36,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:34:36,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:36,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 21:34:36,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:36,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:34:36,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103020220] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:36,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:36,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-12 21:34:36,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636295756] [2024-09-12 21:34:36,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:36,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 21:34:36,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 21:34:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-12 21:34:36,956 INFO L87 Difference]: Start difference. First operand 162 states and 179 transitions. Second operand has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 21 states have internal predecessors, (66), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:34:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:37,300 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2024-09-12 21:34:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:34:37,300 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 21 states have internal predecessors, (66), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 129 [2024-09-12 21:34:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:37,302 INFO L225 Difference]: With dead ends: 175 [2024-09-12 21:34:37,302 INFO L226 Difference]: Without dead ends: 173 [2024-09-12 21:34:37,302 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 268 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-12 21:34:37,302 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 34 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:37,303 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 344 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:34:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-12 21:34:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2024-09-12 21:34:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 134 states have internal predecessors, (151), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:34:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 186 transitions. [2024-09-12 21:34:37,508 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 186 transitions. Word has length 129 [2024-09-12 21:34:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:37,508 INFO L474 AbstractCegarLoop]: Abstraction has 169 states and 186 transitions. [2024-09-12 21:34:37,508 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 21 states have internal predecessors, (66), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:34:37,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 186 transitions. [2024-09-12 21:34:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:34:37,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:37,509 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:37,521 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2024-09-12 21:34:37,709 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2024-09-12 21:34:37,709 INFO L399 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:37,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1540394903, now seen corresponding path program 29 times [2024-09-12 21:34:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614178429] [2024-09-12 21:34:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:38,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:38,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614178429] [2024-09-12 21:34:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614178429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616084085] [2024-09-12 21:34:38,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:34:38,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:38,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:38,199 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:38,200 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2024-09-12 21:34:38,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-12 21:34:38,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:38,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:34:38,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:39,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:39,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616084085] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:39,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:39,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 73 [2024-09-12 21:34:39,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952153663] [2024-09-12 21:34:39,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:39,540 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 21:34:39,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:39,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 21:34:39,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=4259, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:34:39,540 INFO L87 Difference]: Start difference. First operand 169 states and 186 transitions. Second operand has 73 states, 73 states have (on average 1.6164383561643836) internal successors, (118), 73 states have internal predecessors, (118), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:40,252 INFO L93 Difference]: Finished difference Result 289 states and 339 transitions. [2024-09-12 21:34:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:34:40,252 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.6164383561643836) internal successors, (118), 73 states have internal predecessors, (118), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:34:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:40,254 INFO L225 Difference]: With dead ends: 289 [2024-09-12 21:34:40,254 INFO L226 Difference]: Without dead ends: 233 [2024-09-12 21:34:40,255 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 237 SyntacticMatches, 32 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4364 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1005, Invalid=4397, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:34:40,255 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:40,255 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:40,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-09-12 21:34:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 170. [2024-09-12 21:34:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:34:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:34:40,487 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:34:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:40,487 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:34:40,488 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.6164383561643836) internal successors, (118), 73 states have internal predecessors, (118), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:40,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:34:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:34:40,488 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:40,488 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:40,500 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2024-09-12 21:34:40,688 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2024-09-12 21:34:40,689 INFO L399 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:40,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:40,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2140517866, now seen corresponding path program 92 times [2024-09-12 21:34:40,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:40,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677037503] [2024-09-12 21:34:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:40,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 332 proven. 149 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:41,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:41,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677037503] [2024-09-12 21:34:41,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677037503] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:41,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310371825] [2024-09-12 21:34:41,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:34:41,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:41,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:41,178 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:41,179 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2024-09-12 21:34:41,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:34:41,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:41,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:34:41,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 375 proven. 106 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:42,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 375 proven. 106 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:42,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310371825] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:42,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:42,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 72 [2024-09-12 21:34:42,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579283441] [2024-09-12 21:34:42,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:42,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 21:34:42,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 21:34:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=4164, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:34:42,467 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 72 states, 72 states have (on average 1.625) internal successors, (117), 72 states have internal predecessors, (117), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:43,329 INFO L93 Difference]: Finished difference Result 303 states and 353 transitions. [2024-09-12 21:34:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:34:43,330 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.625) internal successors, (117), 72 states have internal predecessors, (117), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:34:43,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:43,332 INFO L225 Difference]: With dead ends: 303 [2024-09-12 21:34:43,332 INFO L226 Difference]: Without dead ends: 247 [2024-09-12 21:34:43,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 238 SyntacticMatches, 32 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4246 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=956, Invalid=4300, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:34:43,332 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:43,332 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 321 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-12 21:34:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 170. [2024-09-12 21:34:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:34:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:34:43,577 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:34:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:43,577 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:34:43,577 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.625) internal successors, (117), 72 states have internal predecessors, (117), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:43,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:34:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:34:43,578 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:43,578 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:43,590 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2024-09-12 21:34:43,778 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2024-09-12 21:34:43,778 INFO L399 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:43,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 511689655, now seen corresponding path program 93 times [2024-09-12 21:34:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353610429] [2024-09-12 21:34:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 332 proven. 137 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:44,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:44,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353610429] [2024-09-12 21:34:44,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353610429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509628847] [2024-09-12 21:34:44,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:34:44,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:44,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:44,325 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:44,325 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2024-09-12 21:34:44,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 21:34:44,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:44,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:34:44,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 375 proven. 94 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:45,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 375 proven. 94 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:45,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509628847] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:45,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:45,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 71 [2024-09-12 21:34:45,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073485394] [2024-09-12 21:34:45,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:45,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:34:45,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:45,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:34:45,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=4067, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:34:45,618 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 71 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 71 states have internal predecessors, (116), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:46,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:46,758 INFO L93 Difference]: Finished difference Result 315 states and 365 transitions. [2024-09-12 21:34:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:34:46,758 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 71 states have internal predecessors, (116), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:34:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:46,760 INFO L225 Difference]: With dead ends: 315 [2024-09-12 21:34:46,760 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 21:34:46,761 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 239 SyntacticMatches, 32 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4069 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=911, Invalid=4201, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:34:46,761 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:46,761 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 473 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:34:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 21:34:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2024-09-12 21:34:47,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:34:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:34:47,011 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:34:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:47,011 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:34:47,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 71 states have internal predecessors, (116), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:47,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:47,011 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:34:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:34:47,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:47,012 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:47,023 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2024-09-12 21:34:47,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,138 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:47,212 INFO L399 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:47,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:47,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1896607242, now seen corresponding path program 94 times [2024-09-12 21:34:47,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:47,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465160804] [2024-09-12 21:34:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:47,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 332 proven. 127 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:47,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465160804] [2024-09-12 21:34:47,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465160804] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176704985] [2024-09-12 21:34:47,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:34:47,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:47,686 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:47,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2024-09-12 21:34:47,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:34:47,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:47,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:34:47,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 375 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:48,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 375 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:48,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176704985] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:48,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:48,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 70 [2024-09-12 21:34:48,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994038995] [2024-09-12 21:34:48,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:48,973 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 21:34:48,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 21:34:48,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=3968, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:34:48,974 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:50,255 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2024-09-12 21:34:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:34:50,256 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:34:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:50,258 INFO L225 Difference]: With dead ends: 325 [2024-09-12 21:34:50,258 INFO L226 Difference]: Without dead ends: 269 [2024-09-12 21:34:50,258 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 240 SyntacticMatches, 32 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3895 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=870, Invalid=4100, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:34:50,258 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:50,259 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 492 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:34:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-09-12 21:34:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 170. [2024-09-12 21:34:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:34:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:34:50,518 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:34:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:50,518 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:34:50,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:50,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:34:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:34:50,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:50,519 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:50,530 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2024-09-12 21:34:50,719 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2024-09-12 21:34:50,719 INFO L399 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:50,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:50,720 INFO L85 PathProgramCache]: Analyzing trace with hash -173178921, now seen corresponding path program 95 times [2024-09-12 21:34:50,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:50,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288602192] [2024-09-12 21:34:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:50,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 332 proven. 119 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:51,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288602192] [2024-09-12 21:34:51,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288602192] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:51,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924825116] [2024-09-12 21:34:51,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:34:51,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:51,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:51,197 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:51,197 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2024-09-12 21:34:51,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-12 21:34:51,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:51,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:34:51,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 76 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:52,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 76 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:52,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924825116] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:52,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 69 [2024-09-12 21:34:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671762738] [2024-09-12 21:34:52,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:52,445 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-12 21:34:52,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-12 21:34:52,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=825, Invalid=3867, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:34:52,446 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 69 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 69 states have internal predecessors, (114), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:53,901 INFO L93 Difference]: Finished difference Result 333 states and 383 transitions. [2024-09-12 21:34:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:34:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 69 states have internal predecessors, (114), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:34:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:53,904 INFO L225 Difference]: With dead ends: 333 [2024-09-12 21:34:53,904 INFO L226 Difference]: Without dead ends: 277 [2024-09-12 21:34:53,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 241 SyntacticMatches, 32 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=833, Invalid=3997, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:34:53,904 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:53,904 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 559 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:34:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-12 21:34:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 170. [2024-09-12 21:34:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:34:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:34:54,165 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:34:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:54,165 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:34:54,165 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 69 states have internal predecessors, (114), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:54,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:34:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:34:54,166 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:54,166 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:54,179 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2024-09-12 21:34:54,366 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,140 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:54,366 INFO L399 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:54,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash 990794198, now seen corresponding path program 96 times [2024-09-12 21:34:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:54,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833615602] [2024-09-12 21:34:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:54,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 332 proven. 113 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833615602] [2024-09-12 21:34:54,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833615602] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257921661] [2024-09-12 21:34:54,844 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:34:54,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:54,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:54,845 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:54,845 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2024-09-12 21:34:54,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-12 21:34:54,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:34:54,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:34:54,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 375 proven. 70 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:55,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 375 proven. 70 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257921661] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:56,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:56,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 68 [2024-09-12 21:34:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579767647] [2024-09-12 21:34:56,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:56,183 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 21:34:56,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 21:34:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=3764, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:34:56,184 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 68 states, 68 states have (on average 1.661764705882353) internal successors, (113), 68 states have internal predecessors, (113), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:34:57,634 INFO L93 Difference]: Finished difference Result 339 states and 389 transitions. [2024-09-12 21:34:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:34:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.661764705882353) internal successors, (113), 68 states have internal predecessors, (113), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:34:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:34:57,636 INFO L225 Difference]: With dead ends: 339 [2024-09-12 21:34:57,636 INFO L226 Difference]: Without dead ends: 283 [2024-09-12 21:34:57,636 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 242 SyntacticMatches, 32 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=800, Invalid=3892, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:34:57,636 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:34:57,637 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 342 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:34:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-12 21:34:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 170. [2024-09-12 21:34:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:34:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:34:57,906 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:34:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:34:57,906 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:34:57,907 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.661764705882353) internal successors, (113), 68 states have internal predecessors, (113), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:34:57,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:34:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:34:57,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:34:57,907 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:34:57,919 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2024-09-12 21:34:58,107 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,141 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:58,108 INFO L399 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:34:58,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:34:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2136720375, now seen corresponding path program 97 times [2024-09-12 21:34:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:34:58,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438437136] [2024-09-12 21:34:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:34:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:34:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:34:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:34:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:34:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:34:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:34:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:34:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:34:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:34:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:34:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:34:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:34:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:34:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:34:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:34:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:34:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:34:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 332 proven. 109 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:34:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438437136] [2024-09-12 21:34:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438437136] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:34:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694772338] [2024-09-12 21:34:58,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:34:58,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:34:58,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:34:58,582 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:34:58,583 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2024-09-12 21:34:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:34:58,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:34:58,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:34:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 375 proven. 66 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:59,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:34:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 375 proven. 66 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:34:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694772338] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:34:59,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:34:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 67 [2024-09-12 21:34:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052328721] [2024-09-12 21:34:59,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:34:59,779 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 21:34:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:34:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 21:34:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3659, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:34:59,780 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 67 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:01,402 INFO L93 Difference]: Finished difference Result 343 states and 393 transitions. [2024-09-12 21:35:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:01,402 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:01,404 INFO L225 Difference]: With dead ends: 343 [2024-09-12 21:35:01,404 INFO L226 Difference]: Without dead ends: 287 [2024-09-12 21:35:01,405 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 243 SyntacticMatches, 32 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=771, Invalid=3785, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:35:01,405 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:01,405 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 465 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-09-12 21:35:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 170. [2024-09-12 21:35:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:01,665 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:01,666 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:01,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:01,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:01,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:01,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:01,666 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:01,678 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2024-09-12 21:35:01,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,142 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:01,867 INFO L399 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:01,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash 511117750, now seen corresponding path program 98 times [2024-09-12 21:35:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709564837] [2024-09-12 21:35:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 332 proven. 107 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:02,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709564837] [2024-09-12 21:35:02,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709564837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557957524] [2024-09-12 21:35:02,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:35:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:02,335 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:02,336 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2024-09-12 21:35:02,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:35:02,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:02,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:02,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:03,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557957524] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:03,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 66 [2024-09-12 21:35:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132395205] [2024-09-12 21:35:03,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:03,522 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-12 21:35:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-12 21:35:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=3552, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:35:03,523 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 66 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:05,138 INFO L93 Difference]: Finished difference Result 345 states and 395 transitions. [2024-09-12 21:35:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:05,138 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:05,140 INFO L225 Difference]: With dead ends: 345 [2024-09-12 21:35:05,140 INFO L226 Difference]: Without dead ends: 289 [2024-09-12 21:35:05,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 244 SyntacticMatches, 32 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=746, Invalid=3676, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:35:05,141 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:05,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 442 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-09-12 21:35:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 170. [2024-09-12 21:35:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:05,413 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:05,413 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:05,413 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:05,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:05,413 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:05,414 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:05,425 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2024-09-12 21:35:05,614 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,143 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:05,614 INFO L399 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:05,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash -234057705, now seen corresponding path program 99 times [2024-09-12 21:35:05,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:05,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304278439] [2024-09-12 21:35:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:05,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 332 proven. 107 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304278439] [2024-09-12 21:35:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304278439] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823385304] [2024-09-12 21:35:06,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:35:06,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:06,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:06,088 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:06,089 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2024-09-12 21:35:06,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 21:35:06,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:06,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:06,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:06,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:07,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823385304] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:07,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:07,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 65 [2024-09-12 21:35:07,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152183399] [2024-09-12 21:35:07,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:07,252 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-12 21:35:07,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:07,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-12 21:35:07,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=717, Invalid=3443, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:35:07,253 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 65 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 65 states have internal predecessors, (110), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:08,947 INFO L93 Difference]: Finished difference Result 345 states and 395 transitions. [2024-09-12 21:35:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 65 states have internal predecessors, (110), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:08,949 INFO L225 Difference]: With dead ends: 345 [2024-09-12 21:35:08,949 INFO L226 Difference]: Without dead ends: 289 [2024-09-12 21:35:08,949 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 245 SyntacticMatches, 32 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3070 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=725, Invalid=3565, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:35:08,949 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:08,950 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 488 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:08,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-09-12 21:35:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 170. [2024-09-12 21:35:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:09,227 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:09,227 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:09,227 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 65 states have internal predecessors, (110), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:09,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:09,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:09,228 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:09,239 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2024-09-12 21:35:09,428 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,144 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:09,428 INFO L399 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:09,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash 711735702, now seen corresponding path program 100 times [2024-09-12 21:35:09,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:09,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413371221] [2024-09-12 21:35:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 332 proven. 109 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:09,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:09,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413371221] [2024-09-12 21:35:09,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413371221] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:09,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528355536] [2024-09-12 21:35:09,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:35:09,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:09,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:09,897 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:09,898 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2024-09-12 21:35:09,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:35:09,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:09,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:09,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 375 proven. 66 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:10,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 375 proven. 66 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528355536] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:11,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:11,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 64 [2024-09-12 21:35:11,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098265] [2024-09-12 21:35:11,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:11,042 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 21:35:11,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:11,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 21:35:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=3332, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:35:11,043 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 64 states, 64 states have (on average 1.703125) internal successors, (109), 64 states have internal predecessors, (109), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:12,731 INFO L93 Difference]: Finished difference Result 343 states and 393 transitions. [2024-09-12 21:35:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:12,731 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.703125) internal successors, (109), 64 states have internal predecessors, (109), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:12,734 INFO L225 Difference]: With dead ends: 343 [2024-09-12 21:35:12,734 INFO L226 Difference]: Without dead ends: 287 [2024-09-12 21:35:12,734 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 246 SyntacticMatches, 32 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:35:12,734 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:12,735 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 407 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-09-12 21:35:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 170. [2024-09-12 21:35:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:13,021 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:13,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:13,022 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:13,022 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.703125) internal successors, (109), 64 states have internal predecessors, (109), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:13,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:13,022 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:13,022 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:13,034 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2024-09-12 21:35:13,223 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2024-09-12 21:35:13,223 INFO L399 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:13,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1019339831, now seen corresponding path program 101 times [2024-09-12 21:35:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:13,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23546379] [2024-09-12 21:35:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:13,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 332 proven. 113 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:13,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23546379] [2024-09-12 21:35:13,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23546379] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146640570] [2024-09-12 21:35:13,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:35:13,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:13,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:13,730 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:13,731 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2024-09-12 21:35:13,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-12 21:35:13,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:13,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:13,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 375 proven. 70 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:14,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 375 proven. 70 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:14,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146640570] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:14,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:14,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 63 [2024-09-12 21:35:14,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696009381] [2024-09-12 21:35:14,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:14,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-09-12 21:35:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-09-12 21:35:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=3219, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:35:14,882 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 63 states, 63 states have (on average 1.7142857142857142) internal successors, (108), 63 states have internal predecessors, (108), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:16,509 INFO L93 Difference]: Finished difference Result 339 states and 389 transitions. [2024-09-12 21:35:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:16,510 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.7142857142857142) internal successors, (108), 63 states have internal predecessors, (108), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:16,512 INFO L225 Difference]: With dead ends: 339 [2024-09-12 21:35:16,512 INFO L226 Difference]: Without dead ends: 283 [2024-09-12 21:35:16,512 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 247 SyntacticMatches, 32 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2761 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=695, Invalid=3337, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:35:16,512 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:16,512 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 464 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:35:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-12 21:35:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 170. [2024-09-12 21:35:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:16,784 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:16,784 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:16,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.7142857142857142) internal successors, (108), 63 states have internal predecessors, (108), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:16,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:16,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:16,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:16,785 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:16,796 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2024-09-12 21:35:16,985 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2024-09-12 21:35:16,985 INFO L399 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:16,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:16,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2018778762, now seen corresponding path program 102 times [2024-09-12 21:35:16,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:16,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871109331] [2024-09-12 21:35:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:16,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 332 proven. 119 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:17,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871109331] [2024-09-12 21:35:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871109331] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135399637] [2024-09-12 21:35:17,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:35:17,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:17,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:17,493 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:17,495 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2024-09-12 21:35:17,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-12 21:35:17,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:17,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:17,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 76 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:18,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 76 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135399637] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:18,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 62 [2024-09-12 21:35:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228070821] [2024-09-12 21:35:18,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:18,639 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 21:35:18,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 21:35:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=3104, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:35:18,640 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:20,104 INFO L93 Difference]: Finished difference Result 333 states and 383 transitions. [2024-09-12 21:35:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:20,104 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:20,106 INFO L225 Difference]: With dead ends: 333 [2024-09-12 21:35:20,106 INFO L226 Difference]: Without dead ends: 277 [2024-09-12 21:35:20,107 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 248 SyntacticMatches, 32 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=686, Invalid=3220, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:35:20,107 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:20,107 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 407 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-12 21:35:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 170. [2024-09-12 21:35:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:20,393 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:20,394 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:20,394 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:20,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:20,394 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:20,394 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:20,406 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2024-09-12 21:35:20,595 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146,147 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:20,595 INFO L399 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:20,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 654164055, now seen corresponding path program 103 times [2024-09-12 21:35:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:20,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185002000] [2024-09-12 21:35:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:20,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 332 proven. 127 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:21,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:21,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185002000] [2024-09-12 21:35:21,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185002000] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:21,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151042207] [2024-09-12 21:35:21,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:35:21,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:21,055 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:21,056 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2024-09-12 21:35:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:21,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:21,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 375 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:21,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 375 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151042207] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:22,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:22,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 61 [2024-09-12 21:35:22,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072712248] [2024-09-12 21:35:22,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:22,144 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-12 21:35:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-12 21:35:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=2987, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:35:22,145 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 61 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 61 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:23,518 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2024-09-12 21:35:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:23,519 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 61 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:23,521 INFO L225 Difference]: With dead ends: 325 [2024-09-12 21:35:23,521 INFO L226 Difference]: Without dead ends: 269 [2024-09-12 21:35:23,521 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 249 SyntacticMatches, 32 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=681, Invalid=3101, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:35:23,521 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:23,521 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 466 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:23,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-09-12 21:35:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 170. [2024-09-12 21:35:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:23,811 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:23,812 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:23,812 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 61 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:23,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:23,812 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:23,812 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:23,824 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2024-09-12 21:35:24,013 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2024-09-12 21:35:24,013 INFO L399 AbstractCegarLoop]: === Iteration 149 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:24,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1987314006, now seen corresponding path program 104 times [2024-09-12 21:35:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540979038] [2024-09-12 21:35:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 332 proven. 137 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540979038] [2024-09-12 21:35:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540979038] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796303084] [2024-09-12 21:35:24,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:35:24,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:24,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:24,485 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:24,485 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2024-09-12 21:35:24,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:35:24,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:24,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:24,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 375 proven. 94 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:25,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 375 proven. 94 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:25,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796303084] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:25,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:25,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 60 [2024-09-12 21:35:25,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144786696] [2024-09-12 21:35:25,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:25,561 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 21:35:25,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 21:35:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=2868, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:35:25,562 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 60 states, 60 states have (on average 1.75) internal successors, (105), 60 states have internal predecessors, (105), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:26,816 INFO L93 Difference]: Finished difference Result 315 states and 365 transitions. [2024-09-12 21:35:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.75) internal successors, (105), 60 states have internal predecessors, (105), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:26,818 INFO L225 Difference]: With dead ends: 315 [2024-09-12 21:35:26,818 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 21:35:26,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 250 SyntacticMatches, 32 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2320 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=680, Invalid=2980, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:35:26,819 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:26,819 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 596 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 21:35:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2024-09-12 21:35:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:27,097 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:27,097 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:27,097 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.75) internal successors, (105), 60 states have internal predecessors, (105), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:27,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:27,098 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:27,098 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:27,110 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2024-09-12 21:35:27,298 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2024-09-12 21:35:27,298 INFO L399 AbstractCegarLoop]: === Iteration 150 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:27,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:27,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1891771511, now seen corresponding path program 105 times [2024-09-12 21:35:27,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:27,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668309872] [2024-09-12 21:35:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:27,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 332 proven. 149 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:27,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:27,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668309872] [2024-09-12 21:35:27,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668309872] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:27,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831306699] [2024-09-12 21:35:27,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:35:27,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:27,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:27,763 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:27,764 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2024-09-12 21:35:27,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 21:35:27,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:27,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:27,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 375 proven. 106 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:28,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 375 proven. 106 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831306699] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:28,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:28,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 59 [2024-09-12 21:35:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427624176] [2024-09-12 21:35:28,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:28,842 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 21:35:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 21:35:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=2747, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:35:28,843 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 59 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 59 states have internal predecessors, (104), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:29,883 INFO L93 Difference]: Finished difference Result 303 states and 353 transitions. [2024-09-12 21:35:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 59 states have internal predecessors, (104), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:29,885 INFO L225 Difference]: With dead ends: 303 [2024-09-12 21:35:29,885 INFO L226 Difference]: Without dead ends: 247 [2024-09-12 21:35:29,885 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 251 SyntacticMatches, 32 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=683, Invalid=2857, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 21:35:29,886 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:29,886 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 525 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-12 21:35:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 170. [2024-09-12 21:35:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-12 21:35:30,169 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-12 21:35:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:30,169 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-12 21:35:30,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 59 states have internal predecessors, (104), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:30,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-12 21:35:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-12 21:35:30,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:30,170 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:30,181 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2024-09-12 21:35:30,370 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,150 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:30,370 INFO L399 AbstractCegarLoop]: === Iteration 151 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:30,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash 780310838, now seen corresponding path program 15 times [2024-09-12 21:35:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:30,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273872463] [2024-09-12 21:35:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:30,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:35:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:35:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:35:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:35:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:35:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:35:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:35:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:35:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:35:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:35:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:35:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:35:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:35:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:35:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:35:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273872463] [2024-09-12 21:35:30,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273872463] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079246379] [2024-09-12 21:35:30,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:35:30,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:30,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:30,859 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:30,860 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2024-09-12 21:35:30,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 21:35:30,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:30,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:35:30,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:31,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:31,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079246379] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:31,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 58 [2024-09-12 21:35:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182807267] [2024-09-12 21:35:31,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:31,930 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 21:35:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:31,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 21:35:31,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=682, Invalid=2624, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 21:35:31,931 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 58 states, 58 states have (on average 1.7758620689655173) internal successors, (103), 58 states have internal predecessors, (103), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:32,701 INFO L93 Difference]: Finished difference Result 292 states and 343 transitions. [2024-09-12 21:35:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:35:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.7758620689655173) internal successors, (103), 58 states have internal predecessors, (103), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-12 21:35:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:32,703 INFO L225 Difference]: With dead ends: 292 [2024-09-12 21:35:32,704 INFO L226 Difference]: Without dead ends: 236 [2024-09-12 21:35:32,704 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 252 SyntacticMatches, 32 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=690, Invalid=2732, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:35:32,704 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:32,704 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 261 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:32,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-09-12 21:35:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2024-09-12 21:35:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.1397058823529411) internal successors, (155), 137 states have internal predecessors, (155), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:35:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 190 transitions. [2024-09-12 21:35:32,990 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 190 transitions. Word has length 136 [2024-09-12 21:35:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:32,990 INFO L474 AbstractCegarLoop]: Abstraction has 172 states and 190 transitions. [2024-09-12 21:35:32,990 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.7758620689655173) internal successors, (103), 58 states have internal predecessors, (103), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:35:32,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:32,990 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 190 transitions. [2024-09-12 21:35:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-12 21:35:32,991 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:32,991 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:33,002 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2024-09-12 21:35:33,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2024-09-12 21:35:33,191 INFO L399 AbstractCegarLoop]: === Iteration 152 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:33,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1789571330, now seen corresponding path program 30 times [2024-09-12 21:35:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:33,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901972841] [2024-09-12 21:35:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:33,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:33,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901972841] [2024-09-12 21:35:33,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901972841] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:33,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241801218] [2024-09-12 21:35:33,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:35:33,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:33,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:33,462 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:33,463 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2024-09-12 21:35:33,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-12 21:35:33,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:33,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:33,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:33,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:35:33,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241801218] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:33,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:33,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-12 21:35:33,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703140584] [2024-09-12 21:35:33,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:33,876 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 21:35:33,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 21:35:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-12 21:35:33,877 INFO L87 Difference]: Start difference. First operand 172 states and 190 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 22 states have internal predecessors, (69), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:35:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:34,294 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2024-09-12 21:35:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 21:35:34,294 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 22 states have internal predecessors, (69), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 137 [2024-09-12 21:35:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:34,296 INFO L225 Difference]: With dead ends: 185 [2024-09-12 21:35:34,296 INFO L226 Difference]: Without dead ends: 183 [2024-09-12 21:35:34,296 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 287 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:35:34,296 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 39 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:34,296 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 307 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:35:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-09-12 21:35:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2024-09-12 21:35:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 142 states have internal predecessors, (160), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:35:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2024-09-12 21:35:34,574 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 137 [2024-09-12 21:35:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:34,574 INFO L474 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2024-09-12 21:35:34,574 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 22 states have internal predecessors, (69), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:35:34,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2024-09-12 21:35:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:35:34,575 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:34,575 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:34,587 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2024-09-12 21:35:34,775 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,152 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:34,775 INFO L399 AbstractCegarLoop]: === Iteration 153 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:34,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1836293610, now seen corresponding path program 31 times [2024-09-12 21:35:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714546668] [2024-09-12 21:35:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:35,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:35,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714546668] [2024-09-12 21:35:35,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714546668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:35,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124350284] [2024-09-12 21:35:35,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:35:35,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:35,318 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:35,319 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2024-09-12 21:35:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:35,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:35,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:36,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124350284] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:36,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:36,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 77 [2024-09-12 21:35:36,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196425522] [2024-09-12 21:35:36,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:36,775 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-12 21:35:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:36,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-12 21:35:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1109, Invalid=4743, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:35:36,776 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 77 states have internal predecessors, (124), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:37,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:37,645 INFO L93 Difference]: Finished difference Result 306 states and 359 transitions. [2024-09-12 21:35:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:35:37,646 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 77 states have internal predecessors, (124), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:35:37,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:37,648 INFO L225 Difference]: With dead ends: 306 [2024-09-12 21:35:37,648 INFO L226 Difference]: Without dead ends: 247 [2024-09-12 21:35:37,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 251 SyntacticMatches, 34 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4901 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1117, Invalid=4889, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:35:37,648 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:37,648 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 502 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-12 21:35:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 180. [2024-09-12 21:35:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:35:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:35:37,956 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:35:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:37,956 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:35:37,957 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 77 states have internal predecessors, (124), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:37,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:35:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:35:37,957 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:37,957 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:37,969 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2024-09-12 21:35:38,157 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,153 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:38,158 INFO L399 AbstractCegarLoop]: === Iteration 154 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:38,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1421815189, now seen corresponding path program 106 times [2024-09-12 21:35:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:38,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908819290] [2024-09-12 21:35:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:38,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 378 proven. 167 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908819290] [2024-09-12 21:35:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908819290] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786721424] [2024-09-12 21:35:38,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:35:38,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:38,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:38,700 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:38,700 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2024-09-12 21:35:38,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:35:38,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:38,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:38,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 424 proven. 121 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:39,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 424 proven. 121 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:40,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786721424] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:40,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:40,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 76 [2024-09-12 21:35:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005832440] [2024-09-12 21:35:40,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:40,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-12 21:35:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:40,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-12 21:35:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=4643, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:35:40,127 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 76 states, 76 states have (on average 1.618421052631579) internal successors, (123), 76 states have internal predecessors, (123), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:41,264 INFO L93 Difference]: Finished difference Result 321 states and 374 transitions. [2024-09-12 21:35:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:35:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.618421052631579) internal successors, (123), 76 states have internal predecessors, (123), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:35:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:41,266 INFO L225 Difference]: With dead ends: 321 [2024-09-12 21:35:41,266 INFO L226 Difference]: Without dead ends: 262 [2024-09-12 21:35:41,267 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 252 SyntacticMatches, 34 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4776 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1065, Invalid=4787, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:35:41,267 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:41,267 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 465 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:35:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-09-12 21:35:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 180. [2024-09-12 21:35:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:35:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:35:41,597 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:35:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:41,597 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:35:41,597 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.618421052631579) internal successors, (123), 76 states have internal predecessors, (123), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:41,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:35:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:35:41,597 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:41,598 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:41,609 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2024-09-12 21:35:41,798 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable153 [2024-09-12 21:35:41,798 INFO L399 AbstractCegarLoop]: === Iteration 155 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:41,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1521125834, now seen corresponding path program 107 times [2024-09-12 21:35:41,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:41,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056703164] [2024-09-12 21:35:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:41,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 378 proven. 154 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:42,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056703164] [2024-09-12 21:35:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056703164] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888471994] [2024-09-12 21:35:42,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:35:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:42,333 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:42,334 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2024-09-12 21:35:42,398 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-09-12 21:35:42,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:42,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:42,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 424 proven. 108 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:43,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 424 proven. 108 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888471994] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:43,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:43,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 75 [2024-09-12 21:35:43,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006864072] [2024-09-12 21:35:43,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:43,740 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 21:35:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 21:35:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1009, Invalid=4541, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:35:43,742 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 75 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 75 states have internal predecessors, (122), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:45,044 INFO L93 Difference]: Finished difference Result 334 states and 387 transitions. [2024-09-12 21:35:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:35:45,044 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 75 states have internal predecessors, (122), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:35:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:45,046 INFO L225 Difference]: With dead ends: 334 [2024-09-12 21:35:45,046 INFO L226 Difference]: Without dead ends: 275 [2024-09-12 21:35:45,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 253 SyntacticMatches, 34 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4588 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1017, Invalid=4683, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:35:45,047 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:45,047 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 334 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-12 21:35:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 180. [2024-09-12 21:35:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:35:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:35:45,378 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:35:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:45,378 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:35:45,378 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 75 states have internal predecessors, (122), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:45,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:35:45,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:35:45,379 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:45,379 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:45,391 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2024-09-12 21:35:45,579 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,155 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:45,579 INFO L399 AbstractCegarLoop]: === Iteration 156 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:45,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1200417419, now seen corresponding path program 108 times [2024-09-12 21:35:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015652927] [2024-09-12 21:35:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 378 proven. 143 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:46,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:46,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015652927] [2024-09-12 21:35:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015652927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:46,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822913804] [2024-09-12 21:35:46,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:35:46,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:46,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:46,105 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:46,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2024-09-12 21:35:46,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-12 21:35:46,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:46,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:46,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 424 proven. 97 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:47,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 424 proven. 97 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:47,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822913804] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:47,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:47,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 74 [2024-09-12 21:35:47,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744725435] [2024-09-12 21:35:47,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:47,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-12 21:35:47,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:47,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-12 21:35:47,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=965, Invalid=4437, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:35:47,502 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 74 states, 74 states have (on average 1.635135135135135) internal successors, (121), 74 states have internal predecessors, (121), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:49,184 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2024-09-12 21:35:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:35:49,185 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.635135135135135) internal successors, (121), 74 states have internal predecessors, (121), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:35:49,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:49,187 INFO L225 Difference]: With dead ends: 345 [2024-09-12 21:35:49,187 INFO L226 Difference]: Without dead ends: 286 [2024-09-12 21:35:49,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 254 SyntacticMatches, 34 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4403 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=973, Invalid=4577, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:35:49,188 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:49,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 499 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:35:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-09-12 21:35:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 180. [2024-09-12 21:35:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:35:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:35:49,528 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:35:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:49,528 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:35:49,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.635135135135135) internal successors, (121), 74 states have internal predecessors, (121), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:49,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:35:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:35:49,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:49,529 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:49,541 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2024-09-12 21:35:49,729 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2024-09-12 21:35:49,729 INFO L399 AbstractCegarLoop]: === Iteration 157 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:49,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:49,730 INFO L85 PathProgramCache]: Analyzing trace with hash -912977322, now seen corresponding path program 109 times [2024-09-12 21:35:49,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:49,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007979939] [2024-09-12 21:35:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:49,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 378 proven. 134 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:50,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:50,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007979939] [2024-09-12 21:35:50,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007979939] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:50,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84046694] [2024-09-12 21:35:50,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:35:50,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:50,314 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:50,315 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2024-09-12 21:35:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:50,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:50,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:51,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:51,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84046694] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:51,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 73 [2024-09-12 21:35:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159811262] [2024-09-12 21:35:51,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:51,666 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 21:35:51,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 21:35:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=925, Invalid=4331, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:35:51,667 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 73 states, 73 states have (on average 1.643835616438356) internal successors, (120), 73 states have internal predecessors, (120), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:53,541 INFO L93 Difference]: Finished difference Result 354 states and 407 transitions. [2024-09-12 21:35:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:35:53,541 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.643835616438356) internal successors, (120), 73 states have internal predecessors, (120), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:35:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:53,543 INFO L225 Difference]: With dead ends: 354 [2024-09-12 21:35:53,544 INFO L226 Difference]: Without dead ends: 295 [2024-09-12 21:35:53,544 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 255 SyntacticMatches, 34 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4221 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=933, Invalid=4469, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:35:53,544 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:53,544 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 549 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:35:53,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-09-12 21:35:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 180. [2024-09-12 21:35:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:35:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:35:53,890 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:35:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:53,890 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:35:53,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.643835616438356) internal successors, (120), 73 states have internal predecessors, (120), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:53,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:35:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:35:53,891 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:53,891 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:53,902 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2024-09-12 21:35:54,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2024-09-12 21:35:54,091 INFO L399 AbstractCegarLoop]: === Iteration 158 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:54,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1035957589, now seen corresponding path program 110 times [2024-09-12 21:35:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:54,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623667482] [2024-09-12 21:35:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:54,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 378 proven. 127 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:54,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623667482] [2024-09-12 21:35:54,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623667482] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941137025] [2024-09-12 21:35:54,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:35:54,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:54,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:54,621 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:54,622 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2024-09-12 21:35:54,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:35:54,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:54,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:54,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 81 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:55,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:35:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 81 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941137025] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:35:55,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:35:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 72 [2024-09-12 21:35:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198327006] [2024-09-12 21:35:55,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:35:55,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 21:35:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:35:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 21:35:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=889, Invalid=4223, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:35:55,976 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 72 states, 72 states have (on average 1.6527777777777777) internal successors, (119), 72 states have internal predecessors, (119), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:35:57,940 INFO L93 Difference]: Finished difference Result 361 states and 414 transitions. [2024-09-12 21:35:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:35:57,941 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.6527777777777777) internal successors, (119), 72 states have internal predecessors, (119), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:35:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:35:57,943 INFO L225 Difference]: With dead ends: 361 [2024-09-12 21:35:57,943 INFO L226 Difference]: Without dead ends: 302 [2024-09-12 21:35:57,943 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 256 SyntacticMatches, 34 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4042 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=897, Invalid=4359, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:35:57,943 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:35:57,943 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 448 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:35:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-09-12 21:35:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 180. [2024-09-12 21:35:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:35:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:35:58,284 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:35:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:35:58,284 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:35:58,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.6527777777777777) internal successors, (119), 72 states have internal predecessors, (119), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:35:58,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:35:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:35:58,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:35:58,285 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:35:58,297 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2024-09-12 21:35:58,485 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2024-09-12 21:35:58,485 INFO L399 AbstractCegarLoop]: === Iteration 159 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:35:58,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:35:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2068657782, now seen corresponding path program 111 times [2024-09-12 21:35:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:35:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825469648] [2024-09-12 21:35:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:35:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:35:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:35:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:35:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:35:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:35:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:35:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:35:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:35:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:35:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:35:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:58,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:35:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:35:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:35:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:35:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:35:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:35:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:35:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:35:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:35:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 378 proven. 122 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:59,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:35:59,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825469648] [2024-09-12 21:35:59,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825469648] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:35:59,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390506788] [2024-09-12 21:35:59,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:35:59,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:35:59,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:35:59,008 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:35:59,009 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2024-09-12 21:35:59,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-09-12 21:35:59,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:35:59,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:35:59,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:35:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 424 proven. 76 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:35:59,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 424 proven. 76 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:00,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390506788] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:00,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:00,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 71 [2024-09-12 21:36:00,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456592495] [2024-09-12 21:36:00,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:00,348 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:36:00,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:36:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=857, Invalid=4113, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:36:00,349 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 71 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 71 states have internal predecessors, (118), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:02,450 INFO L93 Difference]: Finished difference Result 366 states and 419 transitions. [2024-09-12 21:36:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:02,451 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 71 states have internal predecessors, (118), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:02,453 INFO L225 Difference]: With dead ends: 366 [2024-09-12 21:36:02,453 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 21:36:02,453 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 257 SyntacticMatches, 34 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3866 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=865, Invalid=4247, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:36:02,454 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:02,454 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 459 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 21:36:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 180. [2024-09-12 21:36:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:02,809 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:02,809 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:02,809 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 71 states have internal predecessors, (118), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:02,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:02,809 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:02,810 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:02,810 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 9, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:02,821 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2024-09-12 21:36:03,010 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2024-09-12 21:36:03,010 INFO L399 AbstractCegarLoop]: === Iteration 160 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:03,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash -530428619, now seen corresponding path program 112 times [2024-09-12 21:36:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:03,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298535363] [2024-09-12 21:36:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 378 proven. 119 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298535363] [2024-09-12 21:36:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298535363] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344667972] [2024-09-12 21:36:03,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:36:03,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:03,525 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:03,525 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2024-09-12 21:36:03,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:36:03,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:03,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:03,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 424 proven. 73 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:04,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 424 proven. 73 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344667972] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:04,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 70 [2024-09-12 21:36:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886453306] [2024-09-12 21:36:04,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:04,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 21:36:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:04,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 21:36:04,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=4001, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:36:04,831 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 70 states, 70 states have (on average 1.6714285714285715) internal successors, (117), 70 states have internal predecessors, (117), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:07,004 INFO L93 Difference]: Finished difference Result 369 states and 422 transitions. [2024-09-12 21:36:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:07,004 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.6714285714285715) internal successors, (117), 70 states have internal predecessors, (117), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:07,006 INFO L225 Difference]: With dead ends: 369 [2024-09-12 21:36:07,006 INFO L226 Difference]: Without dead ends: 310 [2024-09-12 21:36:07,007 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 258 SyntacticMatches, 34 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=837, Invalid=4133, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:36:07,007 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:07,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 525 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-09-12 21:36:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 180. [2024-09-12 21:36:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:07,353 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:07,353 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:07,354 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.6714285714285715) internal successors, (117), 70 states have internal predecessors, (117), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:07,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:07,354 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:07,354 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:07,366 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2024-09-12 21:36:07,555 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,160 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:07,555 INFO L399 AbstractCegarLoop]: === Iteration 161 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:07,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1325392534, now seen corresponding path program 113 times [2024-09-12 21:36:07,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:07,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638594821] [2024-09-12 21:36:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 378 proven. 118 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:08,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638594821] [2024-09-12 21:36:08,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638594821] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083487461] [2024-09-12 21:36:08,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:36:08,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:08,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:08,067 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:08,068 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2024-09-12 21:36:08,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-09-12 21:36:08,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:08,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:08,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 424 proven. 72 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:08,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 424 proven. 72 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:09,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083487461] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:09,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 69 [2024-09-12 21:36:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437882895] [2024-09-12 21:36:09,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:09,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-12 21:36:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-12 21:36:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=805, Invalid=3887, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:36:09,356 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 69 states, 69 states have (on average 1.681159420289855) internal successors, (116), 69 states have internal predecessors, (116), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:11,657 INFO L93 Difference]: Finished difference Result 370 states and 423 transitions. [2024-09-12 21:36:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:11,657 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.681159420289855) internal successors, (116), 69 states have internal predecessors, (116), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:11,659 INFO L225 Difference]: With dead ends: 370 [2024-09-12 21:36:11,659 INFO L226 Difference]: Without dead ends: 311 [2024-09-12 21:36:11,660 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 259 SyntacticMatches, 34 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3523 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=813, Invalid=4017, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:36:11,660 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:11,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 466 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:36:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-09-12 21:36:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 180. [2024-09-12 21:36:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:12,028 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:12,028 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:12,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.681159420289855) internal successors, (116), 69 states have internal predecessors, (116), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:12,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:12,029 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:12,029 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 9, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:12,041 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2024-09-12 21:36:12,229 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2024-09-12 21:36:12,230 INFO L399 AbstractCegarLoop]: === Iteration 162 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:12,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:12,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1939447061, now seen corresponding path program 114 times [2024-09-12 21:36:12,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:12,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070675080] [2024-09-12 21:36:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:12,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 378 proven. 119 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070675080] [2024-09-12 21:36:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070675080] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921014458] [2024-09-12 21:36:12,748 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:36:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:12,749 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:12,750 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2024-09-12 21:36:12,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-12 21:36:12,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:12,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:12,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 424 proven. 73 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:13,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 424 proven. 73 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:14,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921014458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:14,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:14,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 68 [2024-09-12 21:36:14,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756963906] [2024-09-12 21:36:14,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:14,039 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 21:36:14,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 21:36:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=3771, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:36:14,040 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 68 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 68 states have internal predecessors, (115), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:16,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:16,321 INFO L93 Difference]: Finished difference Result 369 states and 422 transitions. [2024-09-12 21:36:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:16,322 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 68 states have internal predecessors, (115), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:16,324 INFO L225 Difference]: With dead ends: 369 [2024-09-12 21:36:16,324 INFO L226 Difference]: Without dead ends: 310 [2024-09-12 21:36:16,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 260 SyntacticMatches, 34 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3356 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=793, Invalid=3899, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:36:16,325 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:16,325 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 478 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:36:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-09-12 21:36:16,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 180. [2024-09-12 21:36:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:16,694 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:16,695 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:16,695 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 68 states have internal predecessors, (115), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:16,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:16,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:16,695 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:16,695 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:16,707 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2024-09-12 21:36:16,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,162 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:16,896 INFO L399 AbstractCegarLoop]: === Iteration 163 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:16,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash 296687286, now seen corresponding path program 115 times [2024-09-12 21:36:16,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:16,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074649397] [2024-09-12 21:36:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 378 proven. 122 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:17,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:17,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074649397] [2024-09-12 21:36:17,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074649397] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:17,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251613518] [2024-09-12 21:36:17,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:36:17,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:17,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:17,410 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:17,411 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2024-09-12 21:36:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:17,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:17,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 424 proven. 76 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:18,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 424 proven. 76 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251613518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:18,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 67 [2024-09-12 21:36:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857491032] [2024-09-12 21:36:18,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:18,655 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 21:36:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 21:36:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=769, Invalid=3653, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:36:18,656 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 67 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 67 states have internal predecessors, (114), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:20,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:20,837 INFO L93 Difference]: Finished difference Result 366 states and 419 transitions. [2024-09-12 21:36:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:20,838 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 67 states have internal predecessors, (114), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:20,840 INFO L225 Difference]: With dead ends: 366 [2024-09-12 21:36:20,840 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 21:36:20,840 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 261 SyntacticMatches, 34 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3192 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=777, Invalid=3779, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:36:20,840 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:20,841 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 571 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 21:36:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 180. [2024-09-12 21:36:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:21,194 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:21,194 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:21,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 67 states have internal predecessors, (114), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:21,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:21,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:21,195 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:21,207 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2024-09-12 21:36:21,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,163 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:21,395 INFO L399 AbstractCegarLoop]: === Iteration 164 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:21,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2111609611, now seen corresponding path program 116 times [2024-09-12 21:36:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:21,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497398963] [2024-09-12 21:36:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 378 proven. 127 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497398963] [2024-09-12 21:36:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497398963] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131751841] [2024-09-12 21:36:21,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:36:21,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:21,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:21,910 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:21,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2024-09-12 21:36:21,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:36:21,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:21,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:21,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 81 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:22,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 81 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131751841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:23,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:23,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 66 [2024-09-12 21:36:23,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711473095] [2024-09-12 21:36:23,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:23,140 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-12 21:36:23,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-12 21:36:23,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=3533, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:36:23,142 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 66 states, 66 states have (on average 1.7121212121212122) internal successors, (113), 66 states have internal predecessors, (113), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:25,224 INFO L93 Difference]: Finished difference Result 361 states and 414 transitions. [2024-09-12 21:36:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.7121212121212122) internal successors, (113), 66 states have internal predecessors, (113), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:25,227 INFO L225 Difference]: With dead ends: 361 [2024-09-12 21:36:25,227 INFO L226 Difference]: Without dead ends: 302 [2024-09-12 21:36:25,227 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 262 SyntacticMatches, 34 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3031 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=765, Invalid=3657, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:36:25,227 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:25,227 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 498 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-09-12 21:36:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 180. [2024-09-12 21:36:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:25,585 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:25,585 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:25,585 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.7121212121212122) internal successors, (113), 66 states have internal predecessors, (113), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:25,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:25,586 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:25,586 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:25,598 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2024-09-12 21:36:25,786 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,164 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:25,786 INFO L399 AbstractCegarLoop]: === Iteration 165 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:25,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash -388181290, now seen corresponding path program 117 times [2024-09-12 21:36:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985366470] [2024-09-12 21:36:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 378 proven. 134 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:26,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985366470] [2024-09-12 21:36:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985366470] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351020270] [2024-09-12 21:36:26,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:36:26,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:26,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:26,306 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:26,307 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2024-09-12 21:36:26,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-09-12 21:36:26,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:26,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:26,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:27,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:27,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351020270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:27,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:27,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 65 [2024-09-12 21:36:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639893297] [2024-09-12 21:36:27,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:27,526 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-12 21:36:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-12 21:36:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:36:27,527 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 65 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 65 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:29,512 INFO L93 Difference]: Finished difference Result 354 states and 407 transitions. [2024-09-12 21:36:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:29,513 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 65 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:29,515 INFO L225 Difference]: With dead ends: 354 [2024-09-12 21:36:29,520 INFO L226 Difference]: Without dead ends: 295 [2024-09-12 21:36:29,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 263 SyntacticMatches, 34 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2873 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=757, Invalid=3533, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:36:29,520 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:29,520 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 490 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-09-12 21:36:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 180. [2024-09-12 21:36:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:29,892 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:29,892 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:29,892 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 65 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:29,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:29,893 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:29,893 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:29,905 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2024-09-12 21:36:30,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,165 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:30,093 INFO L399 AbstractCegarLoop]: === Iteration 166 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:30,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 775791829, now seen corresponding path program 118 times [2024-09-12 21:36:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352475288] [2024-09-12 21:36:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:30,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 378 proven. 143 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:30,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352475288] [2024-09-12 21:36:30,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352475288] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641075101] [2024-09-12 21:36:30,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:36:30,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:30,613 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:30,613 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2024-09-12 21:36:30,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:36:30,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:30,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:30,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 424 proven. 97 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:31,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 424 proven. 97 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641075101] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:31,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:31,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 64 [2024-09-12 21:36:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642516592] [2024-09-12 21:36:31,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:31,818 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 21:36:31,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:31,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 21:36:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=3287, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:36:31,819 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 64 states, 64 states have (on average 1.734375) internal successors, (111), 64 states have internal predecessors, (111), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:33,555 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2024-09-12 21:36:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:33,555 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.734375) internal successors, (111), 64 states have internal predecessors, (111), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:33,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:33,558 INFO L225 Difference]: With dead ends: 345 [2024-09-12 21:36:33,558 INFO L226 Difference]: Without dead ends: 286 [2024-09-12 21:36:33,558 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 264 SyntacticMatches, 34 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2718 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=753, Invalid=3407, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:36:33,558 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:33,558 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 343 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-09-12 21:36:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 180. [2024-09-12 21:36:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:33,927 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:33,927 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:33,927 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.734375) internal successors, (111), 64 states have internal predecessors, (111), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:33,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:33,927 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:33,927 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:33,939 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2024-09-12 21:36:34,128 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,166 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:34,128 INFO L399 AbstractCegarLoop]: === Iteration 167 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:34,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:34,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1921718006, now seen corresponding path program 119 times [2024-09-12 21:36:34,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:34,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942682899] [2024-09-12 21:36:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:34,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 378 proven. 154 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942682899] [2024-09-12 21:36:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942682899] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591447556] [2024-09-12 21:36:34,653 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:36:34,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:34,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:34,655 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:34,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2024-09-12 21:36:34,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-09-12 21:36:34,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:34,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:34,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 424 proven. 108 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:35,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 424 proven. 108 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:35,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591447556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:35,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:35,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 63 [2024-09-12 21:36:35,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085865062] [2024-09-12 21:36:35,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:35,848 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-09-12 21:36:35,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-09-12 21:36:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=3161, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:36:35,849 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 63 states have internal predecessors, (110), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:37,400 INFO L93 Difference]: Finished difference Result 334 states and 387 transitions. [2024-09-12 21:36:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 63 states have internal predecessors, (110), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:37,403 INFO L225 Difference]: With dead ends: 334 [2024-09-12 21:36:37,403 INFO L226 Difference]: Without dead ends: 275 [2024-09-12 21:36:37,403 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 265 SyntacticMatches, 34 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2566 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=753, Invalid=3279, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:36:37,404 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:37,404 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 526 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-12 21:36:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 180. [2024-09-12 21:36:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:37,764 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:37,764 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:37,764 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 63 states have internal predecessors, (110), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:37,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:37,764 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:37,764 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:37,776 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2024-09-12 21:36:37,965 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,167 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:37,965 INFO L399 AbstractCegarLoop]: === Iteration 168 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:37,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 296115381, now seen corresponding path program 120 times [2024-09-12 21:36:37,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:37,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843347100] [2024-09-12 21:36:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:37,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 378 proven. 167 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843347100] [2024-09-12 21:36:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843347100] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10799343] [2024-09-12 21:36:38,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:36:38,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:38,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:38,487 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:38,487 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2024-09-12 21:36:38,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-12 21:36:38,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:38,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:38,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 424 proven. 121 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:39,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 424 proven. 121 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:39,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10799343] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:39,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:39,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 62 [2024-09-12 21:36:39,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114139649] [2024-09-12 21:36:39,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:39,671 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 21:36:39,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:39,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 21:36:39,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=3033, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:36:39,672 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 62 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 62 states have internal predecessors, (109), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:40,962 INFO L93 Difference]: Finished difference Result 321 states and 374 transitions. [2024-09-12 21:36:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:40,962 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 62 states have internal predecessors, (109), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:40,964 INFO L225 Difference]: With dead ends: 321 [2024-09-12 21:36:40,964 INFO L226 Difference]: Without dead ends: 262 [2024-09-12 21:36:40,965 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 266 SyntacticMatches, 34 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=757, Invalid=3149, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:36:40,965 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:40,965 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 482 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-09-12 21:36:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 180. [2024-09-12 21:36:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-09-12 21:36:41,329 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 144 [2024-09-12 21:36:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:41,329 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-09-12 21:36:41,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 62 states have internal predecessors, (109), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:41,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-09-12 21:36:41,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-12 21:36:41,329 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:41,329 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:41,341 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2024-09-12 21:36:41,530 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2024-09-12 21:36:41,530 INFO L399 AbstractCegarLoop]: === Iteration 169 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:41,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -449060074, now seen corresponding path program 16 times [2024-09-12 21:36:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893132331] [2024-09-12 21:36:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:36:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:36:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:36:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:36:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:36:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:36:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:36:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:36:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:36:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:36:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:36:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:36:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:36:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:36:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:36:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:36:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893132331] [2024-09-12 21:36:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893132331] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334477933] [2024-09-12 21:36:42,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:36:42,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:42,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:42,114 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:42,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2024-09-12 21:36:42,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:36:42,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:42,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:36:42,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:42,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:43,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334477933] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:43,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:43,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 61 [2024-09-12 21:36:43,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228058276] [2024-09-12 21:36:43,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:43,264 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-12 21:36:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-12 21:36:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2903, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:36:43,265 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 61 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:44,271 INFO L93 Difference]: Finished difference Result 309 states and 363 transitions. [2024-09-12 21:36:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:36:44,271 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 144 [2024-09-12 21:36:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:44,273 INFO L225 Difference]: With dead ends: 309 [2024-09-12 21:36:44,273 INFO L226 Difference]: Without dead ends: 250 [2024-09-12 21:36:44,274 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 267 SyntacticMatches, 34 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=765, Invalid=3017, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:36:44,274 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:44,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 416 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-09-12 21:36:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 182. [2024-09-12 21:36:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 144 states have (on average 1.1388888888888888) internal successors, (164), 145 states have internal predecessors, (164), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:36:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 201 transitions. [2024-09-12 21:36:44,644 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 201 transitions. Word has length 144 [2024-09-12 21:36:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:44,644 INFO L474 AbstractCegarLoop]: Abstraction has 182 states and 201 transitions. [2024-09-12 21:36:44,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:36:44,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 201 transitions. [2024-09-12 21:36:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-09-12 21:36:44,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:44,645 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:44,656 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2024-09-12 21:36:44,845 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2024-09-12 21:36:44,845 INFO L399 AbstractCegarLoop]: === Iteration 170 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:44,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash -229644159, now seen corresponding path program 32 times [2024-09-12 21:36:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:44,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691587087] [2024-09-12 21:36:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:44,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:36:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:36:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:36:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:36:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:36:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:36:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:36:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:36:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:36:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:36:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:36:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:36:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:36:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:36:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:36:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:36:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:45,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:45,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691587087] [2024-09-12 21:36:45,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691587087] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:45,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864852873] [2024-09-12 21:36:45,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:36:45,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:45,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:45,150 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:45,151 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2024-09-12 21:36:45,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:36:45,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:45,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 21:36:45,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:45,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:36:45,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864852873] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:45,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-12 21:36:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421142391] [2024-09-12 21:36:45,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:45,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 21:36:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 21:36:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:36:45,725 INFO L87 Difference]: Start difference. First operand 182 states and 201 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:36:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:46,234 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2024-09-12 21:36:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:36:46,234 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 145 [2024-09-12 21:36:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:46,236 INFO L225 Difference]: With dead ends: 195 [2024-09-12 21:36:46,236 INFO L226 Difference]: Without dead ends: 193 [2024-09-12 21:36:46,236 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 302 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-12 21:36:46,236 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 38 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:46,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 357 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:36:46,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-09-12 21:36:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2024-09-12 21:36:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 149 states have (on average 1.1342281879194631) internal successors, (169), 150 states have internal predecessors, (169), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:36:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 208 transitions. [2024-09-12 21:36:46,601 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 208 transitions. Word has length 145 [2024-09-12 21:36:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:46,601 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 208 transitions. [2024-09-12 21:36:46,602 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:36:46,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 208 transitions. [2024-09-12 21:36:46,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:36:46,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:46,602 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:46,613 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2024-09-12 21:36:46,802 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2024-09-12 21:36:46,803 INFO L399 AbstractCegarLoop]: === Iteration 171 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:46,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash 10522039, now seen corresponding path program 33 times [2024-09-12 21:36:46,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:46,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369990070] [2024-09-12 21:36:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:46,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:36:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:36:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:36:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:36:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:36:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:36:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:36:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:36:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:36:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:36:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:36:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:36:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:36:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:36:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:36:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:36:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:36:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:47,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:47,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369990070] [2024-09-12 21:36:47,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369990070] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:47,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702851931] [2024-09-12 21:36:47,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:36:47,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:47,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:47,408 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:47,408 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2024-09-12 21:36:47,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 21:36:47,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:47,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:36:47,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:48,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702851931] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:49,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:49,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 81 [2024-09-12 21:36:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207913533] [2024-09-12 21:36:49,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:49,012 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-09-12 21:36:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-09-12 21:36:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=5253, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 21:36:49,013 INFO L87 Difference]: Start difference. First operand 189 states and 208 transitions. Second operand has 81 states, 81 states have (on average 1.6049382716049383) internal successors, (130), 81 states have internal predecessors, (130), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:36:50,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:50,059 INFO L93 Difference]: Finished difference Result 323 states and 379 transitions. [2024-09-12 21:36:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:36:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.6049382716049383) internal successors, (130), 81 states have internal predecessors, (130), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:36:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:50,061 INFO L225 Difference]: With dead ends: 323 [2024-09-12 21:36:50,062 INFO L226 Difference]: Without dead ends: 261 [2024-09-12 21:36:50,062 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 265 SyntacticMatches, 36 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5469 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1235, Invalid=5407, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:36:50,062 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:50,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 521 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:36:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-09-12 21:36:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 190. [2024-09-12 21:36:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:36:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:36:50,466 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:36:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:50,466 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:36:50,466 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.6049382716049383) internal successors, (130), 81 states have internal predecessors, (130), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:36:50,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:36:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:36:50,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:50,467 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:50,479 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2024-09-12 21:36:50,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2024-09-12 21:36:50,667 INFO L399 AbstractCegarLoop]: === Iteration 172 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:50,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1120627254, now seen corresponding path program 121 times [2024-09-12 21:36:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:50,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135141866] [2024-09-12 21:36:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:50,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:36:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:36:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:36:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:36:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:36:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:36:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:36:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:36:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:36:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:36:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:36:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:36:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:36:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:36:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:36:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:36:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:36:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 427 proven. 186 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:51,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135141866] [2024-09-12 21:36:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135141866] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321520132] [2024-09-12 21:36:51,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:36:51,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:51,264 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:51,264 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2024-09-12 21:36:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:51,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:36:51,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 476 proven. 137 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:52,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 476 proven. 137 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:52,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321520132] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:52,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:52,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 80 [2024-09-12 21:36:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532606978] [2024-09-12 21:36:52,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:52,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-12 21:36:52,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:52,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-12 21:36:52,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1172, Invalid=5148, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:36:52,831 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 80 states, 80 states have (on average 1.6125) internal successors, (129), 80 states have internal predecessors, (129), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:36:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:54,289 INFO L93 Difference]: Finished difference Result 339 states and 395 transitions. [2024-09-12 21:36:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:36:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.6125) internal successors, (129), 80 states have internal predecessors, (129), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:36:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:54,291 INFO L225 Difference]: With dead ends: 339 [2024-09-12 21:36:54,291 INFO L226 Difference]: Without dead ends: 277 [2024-09-12 21:36:54,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 266 SyntacticMatches, 36 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5337 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1180, Invalid=5300, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 21:36:54,292 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:54,292 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 347 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:36:54,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-12 21:36:54,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 190. [2024-09-12 21:36:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:36:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:36:54,722 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:36:54,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:54,722 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:36:54,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.6125) internal successors, (129), 80 states have internal predecessors, (129), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:36:54,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:54,722 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:36:54,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:36:54,723 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:54,723 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:54,735 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2024-09-12 21:36:54,923 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,172 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:54,923 INFO L399 AbstractCegarLoop]: === Iteration 173 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:54,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash 463700439, now seen corresponding path program 122 times [2024-09-12 21:36:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515263457] [2024-09-12 21:36:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:36:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:36:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:36:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:36:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:36:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:36:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:36:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:36:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:36:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:36:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:36:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:36:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:36:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:36:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:36:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:36:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:36:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:36:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:36:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 427 proven. 172 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:55,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:36:55,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515263457] [2024-09-12 21:36:55,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515263457] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:36:55,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117103912] [2024-09-12 21:36:55,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:36:55,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:55,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:36:55,518 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:36:55,519 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2024-09-12 21:36:55,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:36:55,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:36:55,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:36:55,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:36:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 476 proven. 123 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:56,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:36:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 476 proven. 123 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:36:57,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117103912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:36:57,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:36:57,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 79 [2024-09-12 21:36:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191078215] [2024-09-12 21:36:57,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:36:57,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-12 21:36:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:36:57,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-12 21:36:57,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=5041, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:36:57,075 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 79 states, 79 states have (on average 1.620253164556962) internal successors, (128), 79 states have internal predecessors, (128), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:36:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:36:58,884 INFO L93 Difference]: Finished difference Result 353 states and 409 transitions. [2024-09-12 21:36:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:36:58,884 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.620253164556962) internal successors, (128), 79 states have internal predecessors, (128), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:36:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:36:58,887 INFO L225 Difference]: With dead ends: 353 [2024-09-12 21:36:58,887 INFO L226 Difference]: Without dead ends: 291 [2024-09-12 21:36:58,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 267 SyntacticMatches, 36 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1129, Invalid=5191, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:36:58,887 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:36:58,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 556 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:36:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-12 21:36:59,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 190. [2024-09-12 21:36:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:36:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:36:59,329 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:36:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:36:59,329 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:36:59,330 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.620253164556962) internal successors, (128), 79 states have internal predecessors, (128), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:36:59,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:36:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:36:59,330 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:36:59,330 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:36:59,342 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2024-09-12 21:36:59,530 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,173 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:36:59,531 INFO L399 AbstractCegarLoop]: === Iteration 174 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:36:59,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:36:59,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1081511402, now seen corresponding path program 123 times [2024-09-12 21:36:59,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:36:59,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797694885] [2024-09-12 21:36:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:36:59,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:36:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 427 proven. 160 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:00,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797694885] [2024-09-12 21:37:00,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797694885] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163597947] [2024-09-12 21:37:00,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:37:00,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:00,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:00,126 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:00,128 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2024-09-12 21:37:00,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 21:37:00,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:00,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:00,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 476 proven. 111 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:01,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 476 proven. 111 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163597947] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:01,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 78 [2024-09-12 21:37:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252833990] [2024-09-12 21:37:01,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:01,647 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-12 21:37:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-12 21:37:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1074, Invalid=4932, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:37:01,648 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 78 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 78 states have internal predecessors, (127), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:03,745 INFO L93 Difference]: Finished difference Result 365 states and 421 transitions. [2024-09-12 21:37:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 78 states have internal predecessors, (127), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:03,747 INFO L225 Difference]: With dead ends: 365 [2024-09-12 21:37:03,747 INFO L226 Difference]: Without dead ends: 303 [2024-09-12 21:37:03,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 268 SyntacticMatches, 36 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1082, Invalid=5080, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:37:03,748 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:03,748 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 576 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:37:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-09-12 21:37:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 190. [2024-09-12 21:37:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:04,194 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:04,194 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:04,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 78 states have internal predecessors, (127), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:04,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:04,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:04,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:04,195 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:04,206 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2024-09-12 21:37:04,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,174 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:04,395 INFO L399 AbstractCegarLoop]: === Iteration 175 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:04,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash -854262281, now seen corresponding path program 124 times [2024-09-12 21:37:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040938278] [2024-09-12 21:37:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 427 proven. 150 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:04,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040938278] [2024-09-12 21:37:04,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040938278] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:04,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931596426] [2024-09-12 21:37:04,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:37:04,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:04,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:04,979 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:04,979 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2024-09-12 21:37:05,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:37:05,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:05,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:05,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 476 proven. 101 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:05,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 476 proven. 101 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931596426] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:06,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:06,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 77 [2024-09-12 21:37:06,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627113226] [2024-09-12 21:37:06,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:06,469 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-12 21:37:06,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:06,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-12 21:37:06,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1031, Invalid=4821, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:37:06,471 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 77 states, 77 states have (on average 1.6363636363636365) internal successors, (126), 77 states have internal predecessors, (126), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:08,884 INFO L93 Difference]: Finished difference Result 375 states and 431 transitions. [2024-09-12 21:37:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:08,884 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.6363636363636365) internal successors, (126), 77 states have internal predecessors, (126), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:08,887 INFO L225 Difference]: With dead ends: 375 [2024-09-12 21:37:08,887 INFO L226 Difference]: Without dead ends: 313 [2024-09-12 21:37:08,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 269 SyntacticMatches, 36 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4749 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1039, Invalid=4967, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:37:08,887 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:08,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 642 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:37:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-12 21:37:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 190. [2024-09-12 21:37:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:09,433 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:09,433 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:09,433 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.6363636363636365) internal successors, (126), 77 states have internal predecessors, (126), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:09,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:09,434 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:09,434 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 12, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:09,445 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2024-09-12 21:37:09,634 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,175 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:09,634 INFO L399 AbstractCegarLoop]: === Iteration 176 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:09,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1508372982, now seen corresponding path program 125 times [2024-09-12 21:37:09,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:09,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135597487] [2024-09-12 21:37:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:09,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 427 proven. 142 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135597487] [2024-09-12 21:37:10,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135597487] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474818556] [2024-09-12 21:37:10,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:37:10,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:10,214 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:10,215 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2024-09-12 21:37:10,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-12 21:37:10,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:10,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:10,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 476 proven. 93 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:11,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 476 proven. 93 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:11,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474818556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:11,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:11,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 76 [2024-09-12 21:37:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297194595] [2024-09-12 21:37:11,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:11,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-12 21:37:11,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-12 21:37:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=4708, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:37:11,681 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:14,352 INFO L93 Difference]: Finished difference Result 383 states and 439 transitions. [2024-09-12 21:37:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:14,353 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:14,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:14,355 INFO L225 Difference]: With dead ends: 383 [2024-09-12 21:37:14,355 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 21:37:14,356 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 270 SyntacticMatches, 36 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1000, Invalid=4852, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:37:14,357 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:14,357 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 578 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:37:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 21:37:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 190. [2024-09-12 21:37:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:14,882 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:14,883 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:14,883 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:14,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:14,883 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:14,883 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:14,895 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Ended with exit code 0 [2024-09-12 21:37:15,084 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,176 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:15,084 INFO L399 AbstractCegarLoop]: === Iteration 177 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:15,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:15,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1861681687, now seen corresponding path program 126 times [2024-09-12 21:37:15,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:15,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980064878] [2024-09-12 21:37:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:15,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 427 proven. 136 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980064878] [2024-09-12 21:37:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980064878] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287815841] [2024-09-12 21:37:15,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:37:15,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:15,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:15,666 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:15,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2024-09-12 21:37:15,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-12 21:37:15,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:15,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:15,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 476 proven. 87 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:16,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 476 proven. 87 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:17,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287815841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:17,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:17,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 75 [2024-09-12 21:37:17,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199984811] [2024-09-12 21:37:17,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:17,125 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 21:37:17,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 21:37:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=4593, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:37:17,126 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 75 states, 75 states have (on average 1.6533333333333333) internal successors, (124), 75 states have internal predecessors, (124), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:19,972 INFO L93 Difference]: Finished difference Result 389 states and 445 transitions. [2024-09-12 21:37:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:19,973 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.6533333333333333) internal successors, (124), 75 states have internal predecessors, (124), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:19,975 INFO L225 Difference]: With dead ends: 389 [2024-09-12 21:37:19,975 INFO L226 Difference]: Without dead ends: 327 [2024-09-12 21:37:19,976 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 271 SyntacticMatches, 36 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4372 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=965, Invalid=4735, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:37:19,976 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:19,976 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 524 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:37:19,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-09-12 21:37:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 190. [2024-09-12 21:37:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:20,446 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:20,447 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:20,447 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.6533333333333333) internal successors, (124), 75 states have internal predecessors, (124), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:20,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:20,447 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:20,447 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 10, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:20,459 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2024-09-12 21:37:20,648 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,177 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:20,648 INFO L399 AbstractCegarLoop]: === Iteration 178 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:20,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1873078742, now seen corresponding path program 127 times [2024-09-12 21:37:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:20,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083732801] [2024-09-12 21:37:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:20,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 427 proven. 132 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083732801] [2024-09-12 21:37:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083732801] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224236749] [2024-09-12 21:37:21,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:37:21,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:21,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:21,219 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:21,220 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2024-09-12 21:37:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:21,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:21,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 476 proven. 83 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:22,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 476 proven. 83 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224236749] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:22,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:22,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 74 [2024-09-12 21:37:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437406511] [2024-09-12 21:37:22,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:22,656 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-12 21:37:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-12 21:37:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=926, Invalid=4476, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:37:22,657 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 74 states, 74 states have (on average 1.662162162162162) internal successors, (123), 74 states have internal predecessors, (123), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:25,572 INFO L93 Difference]: Finished difference Result 393 states and 449 transitions. [2024-09-12 21:37:25,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:25,573 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.662162162162162) internal successors, (123), 74 states have internal predecessors, (123), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:25,575 INFO L225 Difference]: With dead ends: 393 [2024-09-12 21:37:25,576 INFO L226 Difference]: Without dead ends: 331 [2024-09-12 21:37:25,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 272 SyntacticMatches, 36 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4188 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=934, Invalid=4616, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:37:25,576 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:25,577 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 446 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:37:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-12 21:37:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 190. [2024-09-12 21:37:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:26,234 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:26,234 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:26,234 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.662162162162162) internal successors, (123), 74 states have internal predecessors, (123), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:26,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:26,234 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:26,234 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:26,246 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Ended with exit code 0 [2024-09-12 21:37:26,435 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2024-09-12 21:37:26,435 INFO L399 AbstractCegarLoop]: === Iteration 179 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:26,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash -204763593, now seen corresponding path program 128 times [2024-09-12 21:37:26,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:26,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083618490] [2024-09-12 21:37:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:26,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 427 proven. 130 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:27,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:27,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083618490] [2024-09-12 21:37:27,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083618490] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:27,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739847365] [2024-09-12 21:37:27,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:37:27,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:27,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:27,010 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:27,011 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2024-09-12 21:37:27,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:37:27,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:27,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:27,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 476 proven. 81 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:27,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 476 proven. 81 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:28,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739847365] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:28,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:28,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 73 [2024-09-12 21:37:28,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824367261] [2024-09-12 21:37:28,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:28,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 21:37:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:28,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 21:37:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=4357, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:37:28,420 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 73 states, 73 states have (on average 1.6712328767123288) internal successors, (122), 73 states have internal predecessors, (122), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:31,464 INFO L93 Difference]: Finished difference Result 395 states and 451 transitions. [2024-09-12 21:37:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:31,465 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.6712328767123288) internal successors, (122), 73 states have internal predecessors, (122), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:31,467 INFO L225 Difference]: With dead ends: 395 [2024-09-12 21:37:31,467 INFO L226 Difference]: Without dead ends: 333 [2024-09-12 21:37:31,468 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 273 SyntacticMatches, 36 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4007 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=907, Invalid=4495, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:37:31,468 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:31,468 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 672 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:37:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-09-12 21:37:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 190. [2024-09-12 21:37:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:31,963 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:31,963 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:31,963 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.6712328767123288) internal successors, (122), 73 states have internal predecessors, (122), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:31,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:31,964 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:31,964 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:31,976 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2024-09-12 21:37:32,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2024-09-12 21:37:32,164 INFO L399 AbstractCegarLoop]: === Iteration 180 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:32,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:32,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1241622090, now seen corresponding path program 129 times [2024-09-12 21:37:32,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:32,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166883965] [2024-09-12 21:37:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:32,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 427 proven. 130 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166883965] [2024-09-12 21:37:32,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166883965] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568296576] [2024-09-12 21:37:32,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:37:32,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:32,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:32,731 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:32,732 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2024-09-12 21:37:32,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 21:37:32,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:32,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:32,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 476 proven. 81 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:33,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 476 proven. 81 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:34,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568296576] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:34,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:34,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 72 [2024-09-12 21:37:34,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222241552] [2024-09-12 21:37:34,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:34,135 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 21:37:34,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 21:37:34,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=4236, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:37:34,136 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 72 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 72 states have internal predecessors, (121), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:37,153 INFO L93 Difference]: Finished difference Result 395 states and 451 transitions. [2024-09-12 21:37:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:37,153 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 72 states have internal predecessors, (121), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:37,156 INFO L225 Difference]: With dead ends: 395 [2024-09-12 21:37:37,156 INFO L226 Difference]: Without dead ends: 333 [2024-09-12 21:37:37,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 274 SyntacticMatches, 36 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3829 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=884, Invalid=4372, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:37:37,156 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:37,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 346 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:37:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-09-12 21:37:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 190. [2024-09-12 21:37:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:37,637 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:37,637 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:37,638 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 72 states have internal predecessors, (121), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:37,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:37,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:37,638 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 10, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:37,650 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2024-09-12 21:37:37,838 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2024-09-12 21:37:37,839 INFO L399 AbstractCegarLoop]: === Iteration 181 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:37,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 110404183, now seen corresponding path program 130 times [2024-09-12 21:37:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197795496] [2024-09-12 21:37:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 427 proven. 132 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:38,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197795496] [2024-09-12 21:37:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197795496] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75784239] [2024-09-12 21:37:38,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:37:38,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:38,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:38,414 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:38,415 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2024-09-12 21:37:38,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:37:38,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:38,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:38,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 476 proven. 83 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:39,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 476 proven. 83 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75784239] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:39,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:39,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 71 [2024-09-12 21:37:39,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988529978] [2024-09-12 21:37:39,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:39,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:37:39,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:37:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=857, Invalid=4113, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:37:39,789 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 71 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 71 states have internal predecessors, (120), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:42,801 INFO L93 Difference]: Finished difference Result 393 states and 449 transitions. [2024-09-12 21:37:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:42,802 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 71 states have internal predecessors, (120), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:42,804 INFO L225 Difference]: With dead ends: 393 [2024-09-12 21:37:42,804 INFO L226 Difference]: Without dead ends: 331 [2024-09-12 21:37:42,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 275 SyntacticMatches, 36 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=865, Invalid=4247, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:37:42,805 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:42,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 491 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:37:42,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-12 21:37:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 190. [2024-09-12 21:37:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:43,284 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:43,284 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:43,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 71 states have internal predecessors, (120), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:43,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:43,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:43,285 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:43,296 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Ended with exit code 0 [2024-09-12 21:37:43,485 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,181 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:43,485 INFO L399 AbstractCegarLoop]: === Iteration 182 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:43,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash 431112598, now seen corresponding path program 131 times [2024-09-12 21:37:43,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:43,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366917353] [2024-09-12 21:37:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:43,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 427 proven. 136 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:44,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:44,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366917353] [2024-09-12 21:37:44,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366917353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:44,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823693388] [2024-09-12 21:37:44,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:37:44,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:44,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:44,059 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:44,060 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2024-09-12 21:37:44,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-12 21:37:44,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:44,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:44,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 476 proven. 87 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:44,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 476 proven. 87 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:45,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823693388] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:45,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:45,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 70 [2024-09-12 21:37:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766560037] [2024-09-12 21:37:45,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:45,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 21:37:45,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 21:37:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=3988, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:37:45,421 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 70 states, 70 states have (on average 1.7) internal successors, (119), 70 states have internal predecessors, (119), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:48,338 INFO L93 Difference]: Finished difference Result 389 states and 445 transitions. [2024-09-12 21:37:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.7) internal successors, (119), 70 states have internal predecessors, (119), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:48,341 INFO L225 Difference]: With dead ends: 389 [2024-09-12 21:37:48,341 INFO L226 Difference]: Without dead ends: 327 [2024-09-12 21:37:48,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 276 SyntacticMatches, 36 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3482 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=850, Invalid=4120, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:37:48,341 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:48,341 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:37:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-09-12 21:37:48,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 190. [2024-09-12 21:37:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:48,819 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:48,819 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:48,819 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.7) internal successors, (119), 70 states have internal predecessors, (119), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:48,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:48,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:48,819 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 12, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:48,831 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2024-09-12 21:37:49,020 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,182 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:49,020 INFO L399 AbstractCegarLoop]: === Iteration 183 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:49,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash 718552695, now seen corresponding path program 132 times [2024-09-12 21:37:49,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:49,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011619535] [2024-09-12 21:37:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 427 proven. 142 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011619535] [2024-09-12 21:37:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011619535] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553856430] [2024-09-12 21:37:49,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:37:49,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:49,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:49,593 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:49,594 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2024-09-12 21:37:49,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-12 21:37:49,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:37:49,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:49,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 476 proven. 93 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:50,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 476 proven. 93 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:50,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553856430] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:50,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:50,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 69 [2024-09-12 21:37:50,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331729041] [2024-09-12 21:37:50,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:50,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-12 21:37:50,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:50,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-12 21:37:50,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=831, Invalid=3861, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:37:50,928 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 69 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:53,653 INFO L93 Difference]: Finished difference Result 383 states and 439 transitions. [2024-09-12 21:37:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:53,654 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:53,656 INFO L225 Difference]: With dead ends: 383 [2024-09-12 21:37:53,656 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 21:37:53,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 277 SyntacticMatches, 36 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3313 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=839, Invalid=3991, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:37:53,657 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:53,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 347 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:37:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 21:37:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 190. [2024-09-12 21:37:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:54,130 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:54,130 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:54,130 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:54,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:54,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:54,131 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:54,142 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Ended with exit code 0 [2024-09-12 21:37:54,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,183 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:54,331 INFO L399 AbstractCegarLoop]: === Iteration 184 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:54,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1627479690, now seen corresponding path program 133 times [2024-09-12 21:37:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:54,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673563454] [2024-09-12 21:37:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 427 proven. 150 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673563454] [2024-09-12 21:37:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673563454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693822406] [2024-09-12 21:37:54,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:37:54,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:54,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:54,901 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:54,902 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2024-09-12 21:37:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:54,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:37:54,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:37:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 476 proven. 101 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:55,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:37:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 476 proven. 101 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:56,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693822406] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:37:56,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:37:56,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 68 [2024-09-12 21:37:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744561584] [2024-09-12 21:37:56,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:37:56,201 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 21:37:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:37:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 21:37:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=3732, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:37:56,203 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 68 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 68 states have internal predecessors, (117), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:37:58,733 INFO L93 Difference]: Finished difference Result 375 states and 431 transitions. [2024-09-12 21:37:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:37:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 68 states have internal predecessors, (117), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:37:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:37:58,736 INFO L225 Difference]: With dead ends: 375 [2024-09-12 21:37:58,736 INFO L226 Difference]: Without dead ends: 313 [2024-09-12 21:37:58,736 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 278 SyntacticMatches, 36 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=832, Invalid=3860, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:37:58,737 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:37:58,737 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 450 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:37:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-12 21:37:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 190. [2024-09-12 21:37:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:37:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:37:59,217 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:37:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:37:59,217 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:37:59,217 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 68 states have internal predecessors, (117), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:37:59,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:37:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:37:59,218 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:37:59,218 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:37:59,229 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2024-09-12 21:37:59,418 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2024-09-12 21:37:59,418 INFO L399 AbstractCegarLoop]: === Iteration 185 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:37:59,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:37:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash -594779497, now seen corresponding path program 134 times [2024-09-12 21:37:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:37:59,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021547249] [2024-09-12 21:37:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:37:59,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:37:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:37:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:37:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:37:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:37:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:37:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:37:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:37:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:37:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:37:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:37:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:37:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:37:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:37:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:37:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:37:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:37:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:37:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:37:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:37:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 427 proven. 160 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:37:59,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:37:59,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021547249] [2024-09-12 21:37:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021547249] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:37:59,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942906253] [2024-09-12 21:37:59,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:37:59,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:37:59,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:37:59,992 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:37:59,993 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2024-09-12 21:38:00,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:38:00,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:00,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:38:00,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 476 proven. 111 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:00,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 476 proven. 111 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:01,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942906253] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:01,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:01,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 67 [2024-09-12 21:38:01,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142109582] [2024-09-12 21:38:01,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:01,291 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 21:38:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 21:38:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=821, Invalid=3601, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:38:01,292 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 67 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 67 states have internal predecessors, (116), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:03,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:03,557 INFO L93 Difference]: Finished difference Result 365 states and 421 transitions. [2024-09-12 21:38:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:38:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 67 states have internal predecessors, (116), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:38:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:03,560 INFO L225 Difference]: With dead ends: 365 [2024-09-12 21:38:03,560 INFO L226 Difference]: Without dead ends: 303 [2024-09-12 21:38:03,561 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 279 SyntacticMatches, 36 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2984 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=829, Invalid=3727, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:38:03,561 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:03,561 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 419 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:38:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-09-12 21:38:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 190. [2024-09-12 21:38:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:38:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:38:04,049 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:38:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:04,049 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:38:04,049 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 67 states have internal predecessors, (116), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:04,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:38:04,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:38:04,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:04,050 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:04,062 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2024-09-12 21:38:04,250 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,185 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:04,251 INFO L399 AbstractCegarLoop]: === Iteration 186 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:04,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1101101398, now seen corresponding path program 135 times [2024-09-12 21:38:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877504351] [2024-09-12 21:38:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:04,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:38:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:38:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:38:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:38:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:38:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:38:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:38:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:38:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:38:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:38:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:38:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:38:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:38:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:38:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:38:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:38:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:38:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 427 proven. 172 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:04,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877504351] [2024-09-12 21:38:04,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877504351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891817677] [2024-09-12 21:38:04,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:38:04,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:04,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:04,822 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:04,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2024-09-12 21:38:04,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 21:38:04,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:04,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:38:04,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 476 proven. 123 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:05,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 476 proven. 123 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891817677] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:06,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 66 [2024-09-12 21:38:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152371919] [2024-09-12 21:38:06,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:06,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-12 21:38:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-12 21:38:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=3468, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:38:06,127 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 66 states have internal predecessors, (115), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:08,085 INFO L93 Difference]: Finished difference Result 353 states and 409 transitions. [2024-09-12 21:38:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:38:08,086 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 66 states have internal predecessors, (115), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:38:08,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:08,088 INFO L225 Difference]: With dead ends: 353 [2024-09-12 21:38:08,088 INFO L226 Difference]: Without dead ends: 291 [2024-09-12 21:38:08,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 280 SyntacticMatches, 36 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=830, Invalid=3592, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:38:08,089 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:08,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 339 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:38:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-12 21:38:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 190. [2024-09-12 21:38:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:38:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:38:08,578 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:38:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:08,578 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:38:08,578 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 66 states have internal predecessors, (115), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:08,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:38:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:38:08,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:08,579 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:08,591 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Ended with exit code 0 [2024-09-12 21:38:08,779 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,186 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:08,780 INFO L399 AbstractCegarLoop]: === Iteration 187 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:08,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1338044745, now seen corresponding path program 136 times [2024-09-12 21:38:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11670683] [2024-09-12 21:38:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:38:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:38:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:38:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:38:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:38:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:38:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:38:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:38:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:38:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:38:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:38:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:38:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:38:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:38:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:38:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:38:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:38:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 427 proven. 186 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:09,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:09,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11670683] [2024-09-12 21:38:09,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11670683] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198530873] [2024-09-12 21:38:09,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:38:09,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:09,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:09,351 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:09,351 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2024-09-12 21:38:09,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:38:09,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:09,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:38:09,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 476 proven. 137 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:10,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 476 proven. 137 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198530873] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:10,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 65 [2024-09-12 21:38:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340121845] [2024-09-12 21:38:10,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:10,637 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-12 21:38:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:10,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-12 21:38:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=3333, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:38:10,638 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:12,293 INFO L93 Difference]: Finished difference Result 339 states and 395 transitions. [2024-09-12 21:38:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:38:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:38:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:12,295 INFO L225 Difference]: With dead ends: 339 [2024-09-12 21:38:12,296 INFO L226 Difference]: Without dead ends: 277 [2024-09-12 21:38:12,296 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 281 SyntacticMatches, 36 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=835, Invalid=3455, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:38:12,296 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:12,296 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 543 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:38:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-12 21:38:12,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 190. [2024-09-12 21:38:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:38:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-09-12 21:38:12,789 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 152 [2024-09-12 21:38:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:12,789 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-09-12 21:38:12,789 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:12,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:12,789 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-09-12 21:38:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-09-12 21:38:12,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:12,790 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:12,801 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2024-09-12 21:38:12,990 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,187 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:12,990 INFO L399 AbstractCegarLoop]: === Iteration 188 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:12,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash -723990218, now seen corresponding path program 17 times [2024-09-12 21:38:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:12,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291705551] [2024-09-12 21:38:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:38:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:38:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:38:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:38:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:38:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:38:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:38:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:38:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:38:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:38:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:38:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:38:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:38:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:38:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:38:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:38:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:38:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:13,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291705551] [2024-09-12 21:38:13,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291705551] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:13,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078115779] [2024-09-12 21:38:13,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:38:13,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:13,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:13,567 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:13,568 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2024-09-12 21:38:13,633 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-12 21:38:13,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:13,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:38:13,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:14,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:14,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078115779] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:14,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 64 [2024-09-12 21:38:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089516937] [2024-09-12 21:38:14,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:14,833 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 21:38:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 21:38:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=836, Invalid=3196, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 21:38:14,834 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 64 states, 64 states have (on average 1.765625) internal successors, (113), 64 states have internal predecessors, (113), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:16,105 INFO L93 Difference]: Finished difference Result 326 states and 383 transitions. [2024-09-12 21:38:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 21:38:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.765625) internal successors, (113), 64 states have internal predecessors, (113), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 152 [2024-09-12 21:38:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:16,109 INFO L225 Difference]: With dead ends: 326 [2024-09-12 21:38:16,109 INFO L226 Difference]: Without dead ends: 264 [2024-09-12 21:38:16,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 282 SyntacticMatches, 36 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=844, Invalid=3316, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 21:38:16,110 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:16,110 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 448 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:38:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-12 21:38:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 192. [2024-09-12 21:38:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 152 states have (on average 1.138157894736842) internal successors, (173), 153 states have internal predecessors, (173), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:38:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2024-09-12 21:38:16,718 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 152 [2024-09-12 21:38:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:16,718 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2024-09-12 21:38:16,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.765625) internal successors, (113), 64 states have internal predecessors, (113), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:38:16,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2024-09-12 21:38:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-09-12 21:38:16,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:16,719 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:16,731 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Ended with exit code 0 [2024-09-12 21:38:16,919 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2024-09-12 21:38:16,920 INFO L399 AbstractCegarLoop]: === Iteration 189 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:16,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1206355678, now seen corresponding path program 34 times [2024-09-12 21:38:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:16,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186847015] [2024-09-12 21:38:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:17,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:17,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186847015] [2024-09-12 21:38:17,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186847015] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:17,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71614788] [2024-09-12 21:38:17,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:38:17,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:17,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:17,242 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:17,242 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2024-09-12 21:38:17,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:38:17,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:17,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:17,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:17,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:38:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71614788] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:17,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:17,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-12 21:38:17,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36183987] [2024-09-12 21:38:17,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:17,715 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 21:38:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 21:38:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-12 21:38:17,716 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:38:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:18,348 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2024-09-12 21:38:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 21:38:18,349 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 153 [2024-09-12 21:38:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:18,351 INFO L225 Difference]: With dead ends: 205 [2024-09-12 21:38:18,351 INFO L226 Difference]: Without dead ends: 203 [2024-09-12 21:38:18,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 321 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-12 21:38:18,351 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 43 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:18,351 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 345 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:38:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-12 21:38:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-12 21:38:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 157 states have (on average 1.1337579617834395) internal successors, (178), 158 states have internal predecessors, (178), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 219 transitions. [2024-09-12 21:38:18,840 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 219 transitions. Word has length 153 [2024-09-12 21:38:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:18,840 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 219 transitions. [2024-09-12 21:38:18,840 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:38:18,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 219 transitions. [2024-09-12 21:38:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:18,841 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:18,841 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:18,853 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2024-09-12 21:38:19,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 189 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2024-09-12 21:38:19,041 INFO L399 AbstractCegarLoop]: === Iteration 190 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:19,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:19,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1481427466, now seen corresponding path program 35 times [2024-09-12 21:38:19,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:19,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896307082] [2024-09-12 21:38:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:19,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:19,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896307082] [2024-09-12 21:38:19,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896307082] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742512342] [2024-09-12 21:38:19,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:38:19,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:19,706 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:19,707 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2024-09-12 21:38:19,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 21:38:19,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:19,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:19,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:20,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:21,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742512342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:21,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:21,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 85 [2024-09-12 21:38:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042546084] [2024-09-12 21:38:21,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:21,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-09-12 21:38:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-09-12 21:38:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1351, Invalid=5789, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 21:38:21,444 INFO L87 Difference]: Start difference. First operand 199 states and 219 transitions. Second operand has 85 states, 85 states have (on average 1.6) internal successors, (136), 85 states have internal predecessors, (136), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:22,786 INFO L93 Difference]: Finished difference Result 340 states and 399 transitions. [2024-09-12 21:38:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:38:22,787 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.6) internal successors, (136), 85 states have internal predecessors, (136), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:38:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:22,789 INFO L225 Difference]: With dead ends: 340 [2024-09-12 21:38:22,789 INFO L226 Difference]: Without dead ends: 275 [2024-09-12 21:38:22,789 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 279 SyntacticMatches, 38 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6068 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1359, Invalid=5951, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 21:38:22,790 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:22,790 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 400 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:38:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-12 21:38:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 200. [2024-09-12 21:38:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:38:23,327 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:38:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:23,327 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:38:23,327 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.6) internal successors, (136), 85 states have internal predecessors, (136), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:23,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:38:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:23,328 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:23,328 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:23,339 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2024-09-12 21:38:23,528 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2024-09-12 21:38:23,528 INFO L399 AbstractCegarLoop]: === Iteration 191 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:23,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2100634485, now seen corresponding path program 137 times [2024-09-12 21:38:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816138418] [2024-09-12 21:38:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 479 proven. 206 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816138418] [2024-09-12 21:38:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816138418] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:24,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843425176] [2024-09-12 21:38:24,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:38:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:24,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:24,181 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:24,181 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2024-09-12 21:38:24,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 21:38:24,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:24,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:24,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 531 proven. 154 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:25,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 531 proven. 154 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843425176] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:25,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 84 [2024-09-12 21:38:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83228801] [2024-09-12 21:38:25,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:25,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-12 21:38:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-12 21:38:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1293, Invalid=5679, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 21:38:25,898 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 84 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 84 states have internal predecessors, (135), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:27,745 INFO L93 Difference]: Finished difference Result 357 states and 416 transitions. [2024-09-12 21:38:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:38:27,746 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 84 states have internal predecessors, (135), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:38:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:27,749 INFO L225 Difference]: With dead ends: 357 [2024-09-12 21:38:27,750 INFO L226 Difference]: Without dead ends: 292 [2024-09-12 21:38:27,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 280 SyntacticMatches, 38 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1301, Invalid=5839, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 21:38:27,750 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:27,751 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 519 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:38:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-09-12 21:38:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 200. [2024-09-12 21:38:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:38:28,415 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:38:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:28,415 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:38:28,415 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 84 states have internal predecessors, (135), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:28,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:38:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:28,416 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:28,416 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:28,428 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Ended with exit code 0 [2024-09-12 21:38:28,616 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2024-09-12 21:38:28,616 INFO L399 AbstractCegarLoop]: === Iteration 192 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:28,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1661995542, now seen corresponding path program 138 times [2024-09-12 21:38:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303277886] [2024-09-12 21:38:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 479 proven. 191 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:29,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:29,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303277886] [2024-09-12 21:38:29,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303277886] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:29,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445458505] [2024-09-12 21:38:29,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:38:29,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:29,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:29,260 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:29,263 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2024-09-12 21:38:29,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 21:38:29,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:29,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:29,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 531 proven. 139 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:30,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 531 proven. 139 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:30,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445458505] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:30,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:30,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 83 [2024-09-12 21:38:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831671597] [2024-09-12 21:38:30,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:30,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-12 21:38:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:30,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-12 21:38:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1239, Invalid=5567, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:38:30,962 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 83 states, 83 states have (on average 1.6144578313253013) internal successors, (134), 83 states have internal predecessors, (134), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:33,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:33,207 INFO L93 Difference]: Finished difference Result 372 states and 431 transitions. [2024-09-12 21:38:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:38:33,208 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.6144578313253013) internal successors, (134), 83 states have internal predecessors, (134), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:38:33,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:33,210 INFO L225 Difference]: With dead ends: 372 [2024-09-12 21:38:33,211 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 21:38:33,211 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 281 SyntacticMatches, 38 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5719 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1247, Invalid=5725, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 21:38:33,211 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:33,211 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 427 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:38:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 21:38:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 200. [2024-09-12 21:38:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:38:33,822 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:38:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:33,822 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:38:33,822 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.6144578313253013) internal successors, (134), 83 states have internal predecessors, (134), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:33,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:38:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:33,823 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:33,823 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:33,835 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Ended with exit code 0 [2024-09-12 21:38:34,023 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,192 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:34,023 INFO L399 AbstractCegarLoop]: === Iteration 193 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:34,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash -153269419, now seen corresponding path program 139 times [2024-09-12 21:38:34,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816854744] [2024-09-12 21:38:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 479 proven. 178 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816854744] [2024-09-12 21:38:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816854744] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227026484] [2024-09-12 21:38:34,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:38:34,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:34,664 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:34,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2024-09-12 21:38:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:34,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:34,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 531 proven. 126 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:35,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 531 proven. 126 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:36,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227026484] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:36,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:36,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 82 [2024-09-12 21:38:36,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998141694] [2024-09-12 21:38:36,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:36,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-12 21:38:36,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-12 21:38:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=5453, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:38:36,308 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 82 states, 82 states have (on average 1.6219512195121952) internal successors, (133), 82 states have internal predecessors, (133), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:38,987 INFO L93 Difference]: Finished difference Result 385 states and 444 transitions. [2024-09-12 21:38:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:38:38,987 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.6219512195121952) internal successors, (133), 82 states have internal predecessors, (133), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:38:38,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:38,990 INFO L225 Difference]: With dead ends: 385 [2024-09-12 21:38:38,990 INFO L226 Difference]: Without dead ends: 320 [2024-09-12 21:38:38,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 282 SyntacticMatches, 38 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5512 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1197, Invalid=5609, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:38:38,991 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:38,991 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 420 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:38:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-12 21:38:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 200. [2024-09-12 21:38:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:38:39,589 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:38:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:39,589 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:38:39,589 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.6219512195121952) internal successors, (133), 82 states have internal predecessors, (133), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:39,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:39,589 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:38:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:39,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:39,590 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 14, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:39,602 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2024-09-12 21:38:39,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,193 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:39,790 INFO L399 AbstractCegarLoop]: === Iteration 194 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:39,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1043110346, now seen corresponding path program 140 times [2024-09-12 21:38:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395938547] [2024-09-12 21:38:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 479 proven. 167 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:40,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395938547] [2024-09-12 21:38:40,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395938547] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758461953] [2024-09-12 21:38:40,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:38:40,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:40,428 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:40,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2024-09-12 21:38:40,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:38:40,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:40,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:40,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 531 proven. 115 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:41,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 531 proven. 115 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:42,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758461953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:42,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:42,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 81 [2024-09-12 21:38:42,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201187422] [2024-09-12 21:38:42,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:42,054 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-09-12 21:38:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-09-12 21:38:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1143, Invalid=5337, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 21:38:42,055 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 81 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 81 states have internal predecessors, (132), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:45,152 INFO L93 Difference]: Finished difference Result 396 states and 455 transitions. [2024-09-12 21:38:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:38:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 81 states have internal predecessors, (132), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:38:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:45,155 INFO L225 Difference]: With dead ends: 396 [2024-09-12 21:38:45,155 INFO L226 Difference]: Without dead ends: 331 [2024-09-12 21:38:45,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 283 SyntacticMatches, 38 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5308 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1151, Invalid=5491, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:38:45,156 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:45,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 532 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:38:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-12 21:38:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 200. [2024-09-12 21:38:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:38:45,761 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:38:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:45,761 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:38:45,762 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 81 states have internal predecessors, (132), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:45,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:38:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:45,762 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:45,762 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 13, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:45,774 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Ended with exit code 0 [2024-09-12 21:38:45,962 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,194 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:45,963 INFO L399 AbstractCegarLoop]: === Iteration 195 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:45,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:45,963 INFO L85 PathProgramCache]: Analyzing trace with hash 36563765, now seen corresponding path program 141 times [2024-09-12 21:38:45,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:45,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931831500] [2024-09-12 21:38:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 479 proven. 158 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:46,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:46,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931831500] [2024-09-12 21:38:46,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931831500] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:46,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378887973] [2024-09-12 21:38:46,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:38:46,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:46,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:46,584 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:46,584 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2024-09-12 21:38:46,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-12 21:38:46,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:46,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:46,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 531 proven. 106 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:47,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 531 proven. 106 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:48,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378887973] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:48,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 80 [2024-09-12 21:38:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909790171] [2024-09-12 21:38:48,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:48,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-12 21:38:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-12 21:38:48,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1101, Invalid=5219, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:38:48,187 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 80 states, 80 states have (on average 1.6375) internal successors, (131), 80 states have internal predecessors, (131), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:51,527 INFO L93 Difference]: Finished difference Result 405 states and 464 transitions. [2024-09-12 21:38:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:38:51,528 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.6375) internal successors, (131), 80 states have internal predecessors, (131), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:38:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:51,530 INFO L225 Difference]: With dead ends: 405 [2024-09-12 21:38:51,530 INFO L226 Difference]: Without dead ends: 340 [2024-09-12 21:38:51,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 284 SyntacticMatches, 38 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5107 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1109, Invalid=5371, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 21:38:51,531 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:51,531 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 349 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:38:51,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-09-12 21:38:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 200. [2024-09-12 21:38:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:38:52,130 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:38:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:52,130 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:38:52,131 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.6375) internal successors, (131), 80 states have internal predecessors, (131), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:52,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:52,131 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:38:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:52,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:52,131 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:52,143 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Ended with exit code 0 [2024-09-12 21:38:52,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2024-09-12 21:38:52,332 INFO L399 AbstractCegarLoop]: === Iteration 196 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:52,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:52,332 INFO L85 PathProgramCache]: Analyzing trace with hash -67155370, now seen corresponding path program 142 times [2024-09-12 21:38:52,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:52,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789183008] [2024-09-12 21:38:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 479 proven. 151 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789183008] [2024-09-12 21:38:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789183008] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568949334] [2024-09-12 21:38:52,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:38:52,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:52,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:52,966 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:52,967 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2024-09-12 21:38:53,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:38:53,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:53,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:53,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:38:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 531 proven. 99 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:54,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:38:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 531 proven. 99 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:54,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568949334] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:38:54,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:38:54,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 79 [2024-09-12 21:38:54,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608123751] [2024-09-12 21:38:54,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:38:54,541 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-12 21:38:54,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:38:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-12 21:38:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1063, Invalid=5099, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:38:54,543 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 79 states, 79 states have (on average 1.6455696202531647) internal successors, (130), 79 states have internal predecessors, (130), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:38:58,301 INFO L93 Difference]: Finished difference Result 412 states and 471 transitions. [2024-09-12 21:38:58,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:38:58,302 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.6455696202531647) internal successors, (130), 79 states have internal predecessors, (130), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:38:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:38:58,305 INFO L225 Difference]: With dead ends: 412 [2024-09-12 21:38:58,305 INFO L226 Difference]: Without dead ends: 347 [2024-09-12 21:38:58,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 285 SyntacticMatches, 38 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4909 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1071, Invalid=5249, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:38:58,305 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:38:58,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 546 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:38:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-12 21:38:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 200. [2024-09-12 21:38:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:38:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:38:58,918 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:38:58,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:38:58,919 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:38:58,919 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.6455696202531647) internal successors, (130), 79 states have internal predecessors, (130), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:38:58,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:38:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:38:58,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:38:58,919 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 11, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:38:58,931 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Ended with exit code 0 [2024-09-12 21:38:59,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,196 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:59,120 INFO L399 AbstractCegarLoop]: === Iteration 197 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:38:59,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:38:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1592066837, now seen corresponding path program 143 times [2024-09-12 21:38:59,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:38:59,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262353129] [2024-09-12 21:38:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:38:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:38:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:38:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:38:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:38:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:38:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:38:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:38:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:38:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:38:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:38:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:38:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:38:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:38:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:38:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:38:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:38:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:38:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:38:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:38:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:38:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:38:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 479 proven. 146 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:38:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:38:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262353129] [2024-09-12 21:38:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262353129] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:38:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666460835] [2024-09-12 21:38:59,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:38:59,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:38:59,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:38:59,747 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:38:59,748 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2024-09-12 21:38:59,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 21:38:59,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:38:59,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:38:59,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 531 proven. 94 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:00,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 531 proven. 94 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666460835] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:01,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 78 [2024-09-12 21:39:01,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208894098] [2024-09-12 21:39:01,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:01,326 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-12 21:39:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-12 21:39:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1029, Invalid=4977, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:39:01,327 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 78 states have internal predecessors, (129), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:05,165 INFO L93 Difference]: Finished difference Result 417 states and 476 transitions. [2024-09-12 21:39:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:05,166 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 78 states have internal predecessors, (129), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:05,168 INFO L225 Difference]: With dead ends: 417 [2024-09-12 21:39:05,168 INFO L226 Difference]: Without dead ends: 352 [2024-09-12 21:39:05,169 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 286 SyntacticMatches, 38 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4714 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1037, Invalid=5125, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:39:05,169 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:05,169 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 387 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:39:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-12 21:39:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 200. [2024-09-12 21:39:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:05,771 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:05,771 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:05,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 78 states have internal predecessors, (129), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:05,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:05,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:05,772 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 10, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:05,784 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Ended with exit code 0 [2024-09-12 21:39:05,972 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,197 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:05,973 INFO L399 AbstractCegarLoop]: === Iteration 198 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:05,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1645590134, now seen corresponding path program 144 times [2024-09-12 21:39:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824827788] [2024-09-12 21:39:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:05,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 479 proven. 143 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:06,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:06,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824827788] [2024-09-12 21:39:06,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824827788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:06,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008224723] [2024-09-12 21:39:06,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:39:06,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:06,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:06,590 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:06,591 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2024-09-12 21:39:06,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 21:39:06,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:06,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:06,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 531 proven. 91 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:07,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 531 proven. 91 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:08,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008224723] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:08,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:08,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 77 [2024-09-12 21:39:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887264441] [2024-09-12 21:39:08,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:08,127 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-12 21:39:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-12 21:39:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=4853, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:39:08,128 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 77 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:12,175 INFO L93 Difference]: Finished difference Result 420 states and 479 transitions. [2024-09-12 21:39:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:12,178 INFO L225 Difference]: With dead ends: 420 [2024-09-12 21:39:12,178 INFO L226 Difference]: Without dead ends: 355 [2024-09-12 21:39:12,179 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 287 SyntacticMatches, 38 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4522 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1007, Invalid=4999, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:39:12,179 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:12,179 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 578 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:39:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-12 21:39:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 200. [2024-09-12 21:39:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:12,785 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:12,785 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:12,785 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:12,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:12,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:12,786 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:12,798 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Ended with exit code 0 [2024-09-12 21:39:12,986 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable197 [2024-09-12 21:39:12,986 INFO L399 AbstractCegarLoop]: === Iteration 199 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:12,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1539271947, now seen corresponding path program 145 times [2024-09-12 21:39:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270417358] [2024-09-12 21:39:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:12,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 479 proven. 142 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:13,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270417358] [2024-09-12 21:39:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270417358] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078111222] [2024-09-12 21:39:13,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:39:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:13,610 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:13,611 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2024-09-12 21:39:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:13,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:13,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 531 proven. 90 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:14,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 531 proven. 90 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078111222] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:15,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:15,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 76 [2024-09-12 21:39:15,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839442541] [2024-09-12 21:39:15,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:15,116 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-12 21:39:15,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:15,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-12 21:39:15,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=973, Invalid=4727, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:39:15,117 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 76 states, 76 states have (on average 1.6710526315789473) internal successors, (127), 76 states have internal predecessors, (127), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:19,270 INFO L93 Difference]: Finished difference Result 421 states and 480 transitions. [2024-09-12 21:39:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.6710526315789473) internal successors, (127), 76 states have internal predecessors, (127), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:19,273 INFO L225 Difference]: With dead ends: 421 [2024-09-12 21:39:19,273 INFO L226 Difference]: Without dead ends: 356 [2024-09-12 21:39:19,273 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 288 SyntacticMatches, 38 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4333 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=981, Invalid=4871, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:39:19,274 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:19,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 628 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:39:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-09-12 21:39:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 200. [2024-09-12 21:39:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:19,901 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:19,901 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:19,901 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.6710526315789473) internal successors, (127), 76 states have internal predecessors, (127), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:19,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:19,902 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:19,902 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 10, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:19,913 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Forceful destruction successful, exit code 0 [2024-09-12 21:39:20,102 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,199 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:20,102 INFO L399 AbstractCegarLoop]: === Iteration 200 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:20,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:20,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2098768534, now seen corresponding path program 146 times [2024-09-12 21:39:20,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:20,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473986436] [2024-09-12 21:39:20,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:20,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 479 proven. 143 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:20,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:20,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473986436] [2024-09-12 21:39:20,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473986436] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:20,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897906086] [2024-09-12 21:39:20,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:39:20,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:20,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:20,728 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:20,729 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2024-09-12 21:39:20,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:39:20,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:20,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:20,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 531 proven. 91 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:21,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 531 proven. 91 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:22,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897906086] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:22,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:22,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 75 [2024-09-12 21:39:22,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851233423] [2024-09-12 21:39:22,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:22,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 21:39:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:22,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 21:39:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=951, Invalid=4599, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:39:22,288 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 75 states, 75 states have (on average 1.68) internal successors, (126), 75 states have internal predecessors, (126), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:26,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:26,423 INFO L93 Difference]: Finished difference Result 420 states and 479 transitions. [2024-09-12 21:39:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:26,424 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.68) internal successors, (126), 75 states have internal predecessors, (126), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:26,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:26,427 INFO L225 Difference]: With dead ends: 420 [2024-09-12 21:39:26,427 INFO L226 Difference]: Without dead ends: 355 [2024-09-12 21:39:26,427 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 289 SyntacticMatches, 38 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4147 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:39:26,427 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:26,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 492 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:39:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-12 21:39:27,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 200. [2024-09-12 21:39:27,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:27,135 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:27,135 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:27,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.68) internal successors, (126), 75 states have internal predecessors, (126), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:27,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:27,136 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 11, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:27,152 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Forceful destruction successful, exit code 0 [2024-09-12 21:39:27,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2024-09-12 21:39:27,337 INFO L399 AbstractCegarLoop]: === Iteration 201 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:27,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:27,337 INFO L85 PathProgramCache]: Analyzing trace with hash 553556693, now seen corresponding path program 147 times [2024-09-12 21:39:27,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:27,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846911355] [2024-09-12 21:39:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:27,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 479 proven. 146 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846911355] [2024-09-12 21:39:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846911355] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248552168] [2024-09-12 21:39:27,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:39:27,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:27,980 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:27,981 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2024-09-12 21:39:28,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-12 21:39:28,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:28,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:28,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 531 proven. 94 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:28,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 531 proven. 94 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:29,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248552168] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:29,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:29,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 74 [2024-09-12 21:39:29,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012041702] [2024-09-12 21:39:29,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:29,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-12 21:39:29,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:29,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-12 21:39:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=4469, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:39:29,503 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 74 states, 74 states have (on average 1.6891891891891893) internal successors, (125), 74 states have internal predecessors, (125), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:33,521 INFO L93 Difference]: Finished difference Result 417 states and 476 transitions. [2024-09-12 21:39:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:33,521 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.6891891891891893) internal successors, (125), 74 states have internal predecessors, (125), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:33,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:33,524 INFO L225 Difference]: With dead ends: 417 [2024-09-12 21:39:33,524 INFO L226 Difference]: Without dead ends: 352 [2024-09-12 21:39:33,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 290 SyntacticMatches, 38 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3964 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=941, Invalid=4609, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:39:33,525 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:33,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 566 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:39:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-12 21:39:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 200. [2024-09-12 21:39:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:34,154 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:34,155 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:34,155 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.6891891891891893) internal successors, (125), 74 states have internal predecessors, (125), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:34,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:34,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:34,155 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:34,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Ended with exit code 0 [2024-09-12 21:39:34,356 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2024-09-12 21:39:34,356 INFO L399 AbstractCegarLoop]: === Iteration 202 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:34,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 780805814, now seen corresponding path program 148 times [2024-09-12 21:39:34,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:34,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424640987] [2024-09-12 21:39:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 479 proven. 151 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:34,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:34,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424640987] [2024-09-12 21:39:34,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424640987] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:34,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206941153] [2024-09-12 21:39:34,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:39:34,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:34,977 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:34,978 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2024-09-12 21:39:35,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:39:35,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:35,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:35,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 531 proven. 99 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:35,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 531 proven. 99 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206941153] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:36,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:36,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 73 [2024-09-12 21:39:36,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717676533] [2024-09-12 21:39:36,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:36,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 21:39:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 21:39:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=919, Invalid=4337, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:39:36,448 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 73 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 73 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:40,240 INFO L93 Difference]: Finished difference Result 412 states and 471 transitions. [2024-09-12 21:39:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 73 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:40,243 INFO L225 Difference]: With dead ends: 412 [2024-09-12 21:39:40,243 INFO L226 Difference]: Without dead ends: 347 [2024-09-12 21:39:40,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 291 SyntacticMatches, 38 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3784 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=927, Invalid=4475, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:39:40,244 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:40,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 358 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:39:40,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-12 21:39:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 200. [2024-09-12 21:39:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:40,866 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:40,866 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:40,866 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 73 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:40,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:40,866 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:40,866 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:40,867 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 13, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:40,878 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Forceful destruction successful, exit code 0 [2024-09-12 21:39:41,067 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2024-09-12 21:39:41,067 INFO L399 AbstractCegarLoop]: === Iteration 203 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:41,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1151526219, now seen corresponding path program 149 times [2024-09-12 21:39:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:41,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149719005] [2024-09-12 21:39:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:41,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 479 proven. 158 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:41,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:41,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149719005] [2024-09-12 21:39:41,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149719005] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:41,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922082426] [2024-09-12 21:39:41,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:39:41,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:41,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:41,690 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:41,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2024-09-12 21:39:41,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 21:39:41,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:41,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:41,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 531 proven. 106 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:42,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 531 proven. 106 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:43,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922082426] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:43,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:43,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 72 [2024-09-12 21:39:43,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246328605] [2024-09-12 21:39:43,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:43,148 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 21:39:43,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 21:39:43,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=4203, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:39:43,149 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 72 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 72 states have internal predecessors, (123), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:46,849 INFO L93 Difference]: Finished difference Result 405 states and 464 transitions. [2024-09-12 21:39:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 72 states have internal predecessors, (123), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:46,852 INFO L225 Difference]: With dead ends: 405 [2024-09-12 21:39:46,852 INFO L226 Difference]: Without dead ends: 340 [2024-09-12 21:39:46,853 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 292 SyntacticMatches, 38 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=917, Invalid=4339, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:39:46,853 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:46,853 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 770 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:39:46,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-09-12 21:39:47,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 200. [2024-09-12 21:39:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:47,477 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:47,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:47,477 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:47,477 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 72 states have internal predecessors, (123), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:47,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:47,477 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:47,477 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 14, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:47,489 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Ended with exit code 0 [2024-09-12 21:39:47,678 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2024-09-12 21:39:47,678 INFO L399 AbstractCegarLoop]: === Iteration 204 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:47,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash -798217514, now seen corresponding path program 150 times [2024-09-12 21:39:47,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:47,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216145467] [2024-09-12 21:39:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:47,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 479 proven. 167 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:48,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:48,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216145467] [2024-09-12 21:39:48,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216145467] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:48,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653519912] [2024-09-12 21:39:48,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:39:48,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:48,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:48,309 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:48,310 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2024-09-12 21:39:48,392 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 21:39:48,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:39:48,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:48,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 531 proven. 115 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:49,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 531 proven. 115 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653519912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:49,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:49,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 71 [2024-09-12 21:39:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818369740] [2024-09-12 21:39:49,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:49,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:39:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:39:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=4067, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:39:49,804 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 71 states, 71 states have (on average 1.7183098591549295) internal successors, (122), 71 states have internal predecessors, (122), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:53,195 INFO L93 Difference]: Finished difference Result 396 states and 455 transitions. [2024-09-12 21:39:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:53,195 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.7183098591549295) internal successors, (122), 71 states have internal predecessors, (122), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:53,198 INFO L225 Difference]: With dead ends: 396 [2024-09-12 21:39:53,198 INFO L226 Difference]: Without dead ends: 331 [2024-09-12 21:39:53,199 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 293 SyntacticMatches, 38 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3433 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=911, Invalid=4201, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:39:53,199 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:53,199 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 563 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:39:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-12 21:39:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 200. [2024-09-12 21:39:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:53,864 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:53,864 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:53,865 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.7183098591549295) internal successors, (122), 71 states have internal predecessors, (122), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:53,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:53,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:53,865 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:53,877 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Ended with exit code 0 [2024-09-12 21:39:54,065 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2024-09-12 21:39:54,066 INFO L399 AbstractCegarLoop]: === Iteration 205 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:54,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:54,066 INFO L85 PathProgramCache]: Analyzing trace with hash -786820459, now seen corresponding path program 151 times [2024-09-12 21:39:54,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:54,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593020398] [2024-09-12 21:39:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:39:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:39:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:39:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:39:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:39:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:39:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:39:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:39:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:39:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:39:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:39:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:39:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:39:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:39:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:39:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:39:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:39:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:39:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:39:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 479 proven. 178 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:54,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:39:54,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593020398] [2024-09-12 21:39:54,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593020398] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:39:54,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807692451] [2024-09-12 21:39:54,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:39:54,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:54,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:39:54,694 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:39:54,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2024-09-12 21:39:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:39:54,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:39:54,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:39:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 531 proven. 126 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:55,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:39:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 531 proven. 126 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:39:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807692451] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:39:56,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:39:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 70 [2024-09-12 21:39:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250710034] [2024-09-12 21:39:56,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:39:56,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 21:39:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:39:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 21:39:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=3929, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:39:56,100 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 70 states, 70 states have (on average 1.7285714285714286) internal successors, (121), 70 states have internal predecessors, (121), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:39:59,121 INFO L93 Difference]: Finished difference Result 385 states and 444 transitions. [2024-09-12 21:39:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:39:59,121 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.7285714285714286) internal successors, (121), 70 states have internal predecessors, (121), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:39:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:39:59,124 INFO L225 Difference]: With dead ends: 385 [2024-09-12 21:39:59,124 INFO L226 Difference]: Without dead ends: 320 [2024-09-12 21:39:59,124 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 294 SyntacticMatches, 38 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3262 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=909, Invalid=4061, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:39:59,125 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:39:59,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 557 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:39:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-12 21:39:59,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 200. [2024-09-12 21:39:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:39:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:39:59,751 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:39:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:39:59,751 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:39:59,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.7285714285714286) internal successors, (121), 70 states have internal predecessors, (121), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:39:59,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:59,751 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:39:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:39:59,752 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:39:59,752 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:39:59,763 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2024-09-12 21:39:59,952 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,205 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:39:59,952 INFO L399 AbstractCegarLoop]: === Iteration 206 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:39:59,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:39:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1430304502, now seen corresponding path program 152 times [2024-09-12 21:39:59,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:39:59,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826779788] [2024-09-12 21:39:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:39:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:39:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:40:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:40:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:40:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:40:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:40:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:40:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:40:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:40:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:40:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:40:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:40:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:40:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:40:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:40:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:40:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:40:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:40:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:40:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 479 proven. 191 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:00,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826779788] [2024-09-12 21:40:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826779788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658010878] [2024-09-12 21:40:00,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:40:00,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:00,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:00,582 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:00,582 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2024-09-12 21:40:00,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:40:00,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:00,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:40:00,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 531 proven. 139 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:01,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 531 proven. 139 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:01,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658010878] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:01,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:01,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 69 [2024-09-12 21:40:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599016245] [2024-09-12 21:40:01,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:01,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-12 21:40:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-12 21:40:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=3789, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:40:01,985 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 69 states have internal predecessors, (120), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:40:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:04,516 INFO L93 Difference]: Finished difference Result 372 states and 431 transitions. [2024-09-12 21:40:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:40:04,516 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 69 states have internal predecessors, (120), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:40:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:04,519 INFO L225 Difference]: With dead ends: 372 [2024-09-12 21:40:04,519 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 21:40:04,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 295 SyntacticMatches, 38 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3094 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=911, Invalid=3919, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:40:04,520 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:04,520 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 454 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:40:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 21:40:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 200. [2024-09-12 21:40:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:40:05,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:40:05,162 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:40:05,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:05,162 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:40:05,162 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 69 states have internal predecessors, (120), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:40:05,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:40:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:40:05,163 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:05,163 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:05,175 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Ended with exit code 0 [2024-09-12 21:40:05,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,206 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:05,363 INFO L399 AbstractCegarLoop]: === Iteration 207 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:05,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash 393446005, now seen corresponding path program 153 times [2024-09-12 21:40:05,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:05,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339314945] [2024-09-12 21:40:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:05,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:40:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:40:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:40:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:40:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:40:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:40:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:40:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:40:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:40:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:40:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:40:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:40:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:40:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:40:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:40:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:40:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:40:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:40:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 479 proven. 206 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:05,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:05,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339314945] [2024-09-12 21:40:05,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339314945] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:05,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164705295] [2024-09-12 21:40:05,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:40:05,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:05,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:05,995 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:05,997 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2024-09-12 21:40:06,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-12 21:40:06,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:06,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:40:06,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 531 proven. 154 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:06,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 531 proven. 154 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:07,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164705295] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:07,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:07,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 68 [2024-09-12 21:40:07,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759898948] [2024-09-12 21:40:07,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:07,383 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 21:40:07,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:07,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 21:40:07,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=3647, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:40:07,384 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 68 states, 68 states have (on average 1.75) internal successors, (119), 68 states have internal predecessors, (119), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:40:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:09,478 INFO L93 Difference]: Finished difference Result 357 states and 416 transitions. [2024-09-12 21:40:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:40:09,479 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.75) internal successors, (119), 68 states have internal predecessors, (119), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:40:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:09,482 INFO L225 Difference]: With dead ends: 357 [2024-09-12 21:40:09,482 INFO L226 Difference]: Without dead ends: 292 [2024-09-12 21:40:09,482 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 296 SyntacticMatches, 38 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2929 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=917, Invalid=3775, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:40:09,482 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:09,482 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 494 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:40:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-09-12 21:40:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 200. [2024-09-12 21:40:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 159 states have internal predecessors, (179), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:40:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-09-12 21:40:10,130 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 160 [2024-09-12 21:40:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:10,130 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-09-12 21:40:10,130 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.75) internal successors, (119), 68 states have internal predecessors, (119), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:40:10,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-09-12 21:40:10,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 21:40:10,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:10,131 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:10,143 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Ended with exit code 0 [2024-09-12 21:40:10,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2024-09-12 21:40:10,331 INFO L399 AbstractCegarLoop]: === Iteration 208 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:10,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1745472278, now seen corresponding path program 18 times [2024-09-12 21:40:10,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:10,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472490901] [2024-09-12 21:40:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:10,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:40:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:40:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:40:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:40:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:40:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:40:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:40:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:40:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:40:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:40:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:40:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:40:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:40:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:40:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:40:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:40:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:40:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:40:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:10,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:10,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472490901] [2024-09-12 21:40:10,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472490901] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:10,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81608939] [2024-09-12 21:40:10,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:40:10,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:10,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:10,961 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:10,962 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2024-09-12 21:40:11,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 21:40:11,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:11,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 21:40:11,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:11,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:12,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81608939] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:12,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:12,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 67 [2024-09-12 21:40:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767522403] [2024-09-12 21:40:12,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:12,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 21:40:12,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 21:40:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=919, Invalid=3503, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 21:40:12,339 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 67 states, 67 states have (on average 1.7611940298507462) internal successors, (118), 67 states have internal predecessors, (118), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:40:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:13,913 INFO L93 Difference]: Finished difference Result 343 states and 403 transitions. [2024-09-12 21:40:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 21:40:13,913 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.7611940298507462) internal successors, (118), 67 states have internal predecessors, (118), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 160 [2024-09-12 21:40:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:13,916 INFO L225 Difference]: With dead ends: 343 [2024-09-12 21:40:13,916 INFO L226 Difference]: Without dead ends: 278 [2024-09-12 21:40:13,916 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 297 SyntacticMatches, 38 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2750 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=927, Invalid=3629, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:40:13,917 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:13,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 425 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:40:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-09-12 21:40:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 202. [2024-09-12 21:40:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 160 states have (on average 1.1375) internal successors, (182), 161 states have internal predecessors, (182), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:40:14,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 223 transitions. [2024-09-12 21:40:14,553 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 223 transitions. Word has length 160 [2024-09-12 21:40:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:14,554 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 223 transitions. [2024-09-12 21:40:14,554 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.7611940298507462) internal successors, (118), 67 states have internal predecessors, (118), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 21:40:14,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 223 transitions. [2024-09-12 21:40:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-09-12 21:40:14,554 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:14,554 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:14,566 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Ended with exit code 0 [2024-09-12 21:40:14,755 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,208 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:14,755 INFO L399 AbstractCegarLoop]: === Iteration 209 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:14,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:14,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1029011871, now seen corresponding path program 36 times [2024-09-12 21:40:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:14,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951858084] [2024-09-12 21:40:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:15,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951858084] [2024-09-12 21:40:15,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951858084] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647254124] [2024-09-12 21:40:15,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:40:15,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:15,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:15,121 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:15,122 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2024-09-12 21:40:15,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 21:40:15,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:15,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:15,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:15,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:40:15,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647254124] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:15,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:15,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-12 21:40:15,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156631191] [2024-09-12 21:40:15,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:15,678 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 21:40:15,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:15,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 21:40:15,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-12 21:40:15,679 INFO L87 Difference]: Start difference. First operand 202 states and 223 transitions. Second operand has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 25 states have internal predecessors, (78), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:40:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:16,472 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2024-09-12 21:40:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 21:40:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 25 states have internal predecessors, (78), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 161 [2024-09-12 21:40:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:16,475 INFO L225 Difference]: With dead ends: 215 [2024-09-12 21:40:16,476 INFO L226 Difference]: Without dead ends: 213 [2024-09-12 21:40:16,476 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 338 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:40:16,476 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 45 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:16,476 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 411 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:40:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-09-12 21:40:17,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2024-09-12 21:40:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 165 states have (on average 1.1333333333333333) internal successors, (187), 166 states have internal predecessors, (187), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:40:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 230 transitions. [2024-09-12 21:40:17,115 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 230 transitions. Word has length 161 [2024-09-12 21:40:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:17,116 INFO L474 AbstractCegarLoop]: Abstraction has 209 states and 230 transitions. [2024-09-12 21:40:17,116 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 25 states have internal predecessors, (78), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:40:17,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 230 transitions. [2024-09-12 21:40:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:40:17,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:17,116 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:17,128 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Ended with exit code 0 [2024-09-12 21:40:17,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable208 [2024-09-12 21:40:17,317 INFO L399 AbstractCegarLoop]: === Iteration 210 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:17,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash -191720489, now seen corresponding path program 37 times [2024-09-12 21:40:17,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:17,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100153926] [2024-09-12 21:40:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:17,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:18,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:18,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100153926] [2024-09-12 21:40:18,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100153926] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:18,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580421363] [2024-09-12 21:40:18,027 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:40:18,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:18,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:18,028 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:18,029 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2024-09-12 21:40:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:18,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:18,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:19,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:19,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580421363] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:19,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:19,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 89 [2024-09-12 21:40:19,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358869985] [2024-09-12 21:40:19,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:19,915 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-12 21:40:19,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:19,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-12 21:40:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=6351, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:40:19,917 INFO L87 Difference]: Start difference. First operand 209 states and 230 transitions. Second operand has 89 states, 89 states have (on average 1.595505617977528) internal successors, (142), 89 states have internal predecessors, (142), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:21,589 INFO L93 Difference]: Finished difference Result 357 states and 419 transitions. [2024-09-12 21:40:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:40:21,589 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.595505617977528) internal successors, (142), 89 states have internal predecessors, (142), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:40:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:21,592 INFO L225 Difference]: With dead ends: 357 [2024-09-12 21:40:21,592 INFO L226 Difference]: Without dead ends: 289 [2024-09-12 21:40:21,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 293 SyntacticMatches, 40 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6698 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1489, Invalid=6521, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 21:40:21,593 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:21,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 472 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:40:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-09-12 21:40:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 210. [2024-09-12 21:40:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:40:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:40:22,290 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:40:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:22,290 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:40:22,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.595505617977528) internal successors, (142), 89 states have internal predecessors, (142), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:22,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:40:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:40:22,291 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:22,291 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:22,303 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Ended with exit code 0 [2024-09-12 21:40:22,491 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,210 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:22,491 INFO L399 AbstractCegarLoop]: === Iteration 211 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:22,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:22,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1580559786, now seen corresponding path program 154 times [2024-09-12 21:40:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:22,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943140616] [2024-09-12 21:40:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:22,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 534 proven. 227 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943140616] [2024-09-12 21:40:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943140616] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025535219] [2024-09-12 21:40:23,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:40:23,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:23,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:23,199 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:23,200 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2024-09-12 21:40:23,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:40:23,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:23,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:23,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 589 proven. 172 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:24,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 589 proven. 172 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:25,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025535219] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:25,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:25,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 88 [2024-09-12 21:40:25,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195998175] [2024-09-12 21:40:25,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:25,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-12 21:40:25,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-12 21:40:25,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1420, Invalid=6236, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 21:40:25,056 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 88 states, 88 states have (on average 1.6022727272727273) internal successors, (141), 88 states have internal predecessors, (141), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:27,371 INFO L93 Difference]: Finished difference Result 375 states and 437 transitions. [2024-09-12 21:40:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:40:27,372 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.6022727272727273) internal successors, (141), 88 states have internal predecessors, (141), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:40:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:27,374 INFO L225 Difference]: With dead ends: 375 [2024-09-12 21:40:27,374 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 21:40:27,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 294 SyntacticMatches, 40 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1428, Invalid=6404, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:40:27,375 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:27,375 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 548 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:40:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 21:40:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 210. [2024-09-12 21:40:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:40:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:40:28,099 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:40:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:28,100 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:40:28,100 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.6022727272727273) internal successors, (141), 88 states have internal predecessors, (141), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:28,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:40:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:40:28,100 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:28,100 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:28,113 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Ended with exit code 0 [2024-09-12 21:40:28,301 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210,211 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:28,301 INFO L399 AbstractCegarLoop]: === Iteration 212 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:28,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash -932624393, now seen corresponding path program 155 times [2024-09-12 21:40:28,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:28,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265075350] [2024-09-12 21:40:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:28,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 534 proven. 211 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:28,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:28,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265075350] [2024-09-12 21:40:28,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265075350] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:28,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739481009] [2024-09-12 21:40:28,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:40:28,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:28,997 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:28,998 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2024-09-12 21:40:29,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-09-12 21:40:29,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:29,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:29,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 589 proven. 156 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:30,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 589 proven. 156 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739481009] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:30,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:30,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 87 [2024-09-12 21:40:30,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945904667] [2024-09-12 21:40:30,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:30,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-09-12 21:40:30,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-09-12 21:40:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1363, Invalid=6119, Unknown=0, NotChecked=0, Total=7482 [2024-09-12 21:40:30,827 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 87 states, 87 states have (on average 1.6091954022988506) internal successors, (140), 87 states have internal predecessors, (140), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:33,701 INFO L93 Difference]: Finished difference Result 391 states and 453 transitions. [2024-09-12 21:40:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:40:33,701 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.6091954022988506) internal successors, (140), 87 states have internal predecessors, (140), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:40:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:33,704 INFO L225 Difference]: With dead ends: 391 [2024-09-12 21:40:33,704 INFO L226 Difference]: Without dead ends: 323 [2024-09-12 21:40:33,705 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 295 SyntacticMatches, 40 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6331 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1371, Invalid=6285, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 21:40:33,705 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:33,705 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 522 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:40:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-12 21:40:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 210. [2024-09-12 21:40:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:40:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:40:34,450 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:40:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:34,450 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:40:34,450 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.6091954022988506) internal successors, (140), 87 states have internal predecessors, (140), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:34,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:40:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:40:34,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:34,450 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 16, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:34,462 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Ended with exit code 0 [2024-09-12 21:40:34,651 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2024-09-12 21:40:34,651 INFO L399 AbstractCegarLoop]: === Iteration 213 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:34,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 473750070, now seen corresponding path program 156 times [2024-09-12 21:40:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742016694] [2024-09-12 21:40:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 534 proven. 197 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:35,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:35,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742016694] [2024-09-12 21:40:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742016694] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:35,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828287571] [2024-09-12 21:40:35,353 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:40:35,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:35,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:35,354 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:35,355 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2024-09-12 21:40:35,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-09-12 21:40:35,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:35,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:35,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 589 proven. 142 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:36,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 589 proven. 142 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:37,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828287571] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:37,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:37,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 86 [2024-09-12 21:40:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166462913] [2024-09-12 21:40:37,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:37,157 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-12 21:40:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-12 21:40:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1310, Invalid=6000, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 21:40:37,158 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 86 states, 86 states have (on average 1.6162790697674418) internal successors, (139), 86 states have internal predecessors, (139), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:40,543 INFO L93 Difference]: Finished difference Result 405 states and 467 transitions. [2024-09-12 21:40:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:40:40,543 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.6162790697674418) internal successors, (139), 86 states have internal predecessors, (139), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:40:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:40,546 INFO L225 Difference]: With dead ends: 405 [2024-09-12 21:40:40,546 INFO L226 Difference]: Without dead ends: 337 [2024-09-12 21:40:40,547 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 296 SyntacticMatches, 40 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6113 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1318, Invalid=6164, Unknown=0, NotChecked=0, Total=7482 [2024-09-12 21:40:40,547 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:40,547 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 476 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:40:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-09-12 21:40:41,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 210. [2024-09-12 21:40:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:40:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:40:41,349 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:40:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:41,350 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:40:41,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.6162790697674418) internal successors, (139), 86 states have internal predecessors, (139), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:41,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:40:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:40:41,350 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:41,350 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 15, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:41,362 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Forceful destruction successful, exit code 0 [2024-09-12 21:40:41,551 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 213 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2024-09-12 21:40:41,551 INFO L399 AbstractCegarLoop]: === Iteration 214 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:41,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash -727809001, now seen corresponding path program 157 times [2024-09-12 21:40:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:41,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432073617] [2024-09-12 21:40:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 534 proven. 185 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432073617] [2024-09-12 21:40:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432073617] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181595140] [2024-09-12 21:40:42,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:40:42,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:42,245 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:42,246 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2024-09-12 21:40:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:42,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:42,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 589 proven. 130 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:43,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 589 proven. 130 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181595140] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:44,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 85 [2024-09-12 21:40:44,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175087424] [2024-09-12 21:40:44,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:44,009 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-09-12 21:40:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:44,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-09-12 21:40:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1261, Invalid=5879, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 21:40:44,010 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 85 states, 85 states have (on average 1.6235294117647059) internal successors, (138), 85 states have internal predecessors, (138), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:48,141 INFO L93 Difference]: Finished difference Result 417 states and 479 transitions. [2024-09-12 21:40:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:40:48,141 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.6235294117647059) internal successors, (138), 85 states have internal predecessors, (138), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:40:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:48,145 INFO L225 Difference]: With dead ends: 417 [2024-09-12 21:40:48,145 INFO L226 Difference]: Without dead ends: 349 [2024-09-12 21:40:48,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 297 SyntacticMatches, 40 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5898 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1269, Invalid=6041, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 21:40:48,145 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:48,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 641 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:40:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-09-12 21:40:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 210. [2024-09-12 21:40:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:40:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:40:48,922 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:40:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:48,922 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:40:48,922 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.6235294117647059) internal successors, (138), 85 states have internal predecessors, (138), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:48,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:40:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:40:48,922 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:48,922 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 14, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:48,934 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Ended with exit code 0 [2024-09-12 21:40:49,123 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2024-09-12 21:40:49,123 INFO L399 AbstractCegarLoop]: === Iteration 215 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:49,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash 341809686, now seen corresponding path program 158 times [2024-09-12 21:40:49,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:49,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174543206] [2024-09-12 21:40:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:49,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 534 proven. 175 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:49,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174543206] [2024-09-12 21:40:49,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174543206] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000667568] [2024-09-12 21:40:49,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:40:49,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:49,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:49,813 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:49,813 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2024-09-12 21:40:49,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:40:49,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:49,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:49,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 589 proven. 120 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:50,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 589 proven. 120 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:51,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000667568] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:51,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:51,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 84 [2024-09-12 21:40:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353288313] [2024-09-12 21:40:51,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:51,555 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-12 21:40:51,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-12 21:40:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1216, Invalid=5756, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 21:40:51,556 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 84 states, 84 states have (on average 1.630952380952381) internal successors, (137), 84 states have internal predecessors, (137), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:40:56,029 INFO L93 Difference]: Finished difference Result 427 states and 489 transitions. [2024-09-12 21:40:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:40:56,030 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.630952380952381) internal successors, (137), 84 states have internal predecessors, (137), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:40:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:40:56,033 INFO L225 Difference]: With dead ends: 427 [2024-09-12 21:40:56,033 INFO L226 Difference]: Without dead ends: 359 [2024-09-12 21:40:56,033 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 298 SyntacticMatches, 40 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5686 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1224, Invalid=5916, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 21:40:56,033 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:40:56,033 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 635 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:40:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-09-12 21:40:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 210. [2024-09-12 21:40:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:40:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:40:56,796 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:40:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:40:56,796 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:40:56,796 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.630952380952381) internal successors, (137), 84 states have internal predecessors, (137), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:40:56,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:40:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:40:56,797 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:40:56,797 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 13, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:40:56,809 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Forceful destruction successful, exit code 0 [2024-09-12 21:40:56,997 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,215 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:56,997 INFO L399 AbstractCegarLoop]: === Iteration 216 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:40:56,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:40:56,998 INFO L85 PathProgramCache]: Analyzing trace with hash 791955511, now seen corresponding path program 159 times [2024-09-12 21:40:56,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:40:56,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973215509] [2024-09-12 21:40:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:40:56,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:40:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:40:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:40:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:40:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:40:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:40:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:40:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:40:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:40:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:40:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:40:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:40:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:40:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:40:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:40:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:40:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:40:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:40:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:40:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:40:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:40:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:40:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 534 proven. 167 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:57,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:40:57,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973215509] [2024-09-12 21:40:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973215509] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:40:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293671407] [2024-09-12 21:40:57,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:40:57,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:40:57,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:40:57,688 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:40:57,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2024-09-12 21:40:57,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-09-12 21:40:57,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:40:57,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:40:57,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:40:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 589 proven. 112 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:58,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:40:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 589 proven. 112 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:40:59,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293671407] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:40:59,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:40:59,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 83 [2024-09-12 21:40:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019468544] [2024-09-12 21:40:59,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:40:59,409 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-12 21:40:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:40:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-12 21:40:59,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1175, Invalid=5631, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:40:59,411 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 83 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 83 states have internal predecessors, (136), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:04,335 INFO L93 Difference]: Finished difference Result 435 states and 497 transitions. [2024-09-12 21:41:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:41:04,335 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 83 states have internal predecessors, (136), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:41:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:04,338 INFO L225 Difference]: With dead ends: 435 [2024-09-12 21:41:04,338 INFO L226 Difference]: Without dead ends: 367 [2024-09-12 21:41:04,339 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 299 SyntacticMatches, 40 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5477 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1183, Invalid=5789, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 21:41:04,339 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:04,339 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 670 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:41:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-09-12 21:41:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 210. [2024-09-12 21:41:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:41:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:41:05,122 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:41:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:05,122 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:41:05,122 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 83 states have internal predecessors, (136), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:05,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:41:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:41:05,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:05,123 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:05,135 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Forceful destruction successful, exit code 0 [2024-09-12 21:41:05,323 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,216 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:05,323 INFO L399 AbstractCegarLoop]: === Iteration 217 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:05,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1410280970, now seen corresponding path program 160 times [2024-09-12 21:41:05,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:05,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842389042] [2024-09-12 21:41:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:41:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:41:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:41:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:41:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:41:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:41:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:41:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:41:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:41:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:41:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:41:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:41:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:41:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:41:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:41:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:41:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:41:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:41:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:41:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 534 proven. 161 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:05,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842389042] [2024-09-12 21:41:05,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842389042] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140689445] [2024-09-12 21:41:05,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:41:05,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:05,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:05,999 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:41:06,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2024-09-12 21:41:06,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:41:06,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:06,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:41:06,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 589 proven. 106 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:07,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 589 proven. 106 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140689445] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:07,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:07,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 82 [2024-09-12 21:41:07,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890779916] [2024-09-12 21:41:07,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:07,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-12 21:41:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-12 21:41:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1138, Invalid=5504, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:41:07,691 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 82 states, 82 states have (on average 1.646341463414634) internal successors, (135), 82 states have internal predecessors, (135), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:12,787 INFO L93 Difference]: Finished difference Result 441 states and 503 transitions. [2024-09-12 21:41:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:41:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.646341463414634) internal successors, (135), 82 states have internal predecessors, (135), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:41:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:12,797 INFO L225 Difference]: With dead ends: 441 [2024-09-12 21:41:12,797 INFO L226 Difference]: Without dead ends: 373 [2024-09-12 21:41:12,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 300 SyntacticMatches, 40 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5271 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1146, Invalid=5660, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:41:12,797 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:12,797 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 512 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:41:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-09-12 21:41:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 210. [2024-09-12 21:41:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:41:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:41:13,570 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:41:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:13,570 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:41:13,570 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.646341463414634) internal successors, (135), 82 states have internal predecessors, (135), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:13,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:41:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:41:13,571 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:13,571 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 11, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:13,583 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Ended with exit code 0 [2024-09-12 21:41:13,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2024-09-12 21:41:13,772 INFO L399 AbstractCegarLoop]: === Iteration 218 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:13,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2035510185, now seen corresponding path program 161 times [2024-09-12 21:41:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:13,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654951255] [2024-09-12 21:41:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:41:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:41:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:41:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:41:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:41:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:41:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:41:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:41:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:41:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:41:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:41:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:41:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:41:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:41:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:41:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:41:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:41:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:41:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:41:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 534 proven. 157 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:14,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:14,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654951255] [2024-09-12 21:41:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654951255] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:14,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138068230] [2024-09-12 21:41:14,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:41:14,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:14,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:14,455 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:41:14,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2024-09-12 21:41:14,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-09-12 21:41:14,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:14,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:41:14,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 589 proven. 102 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:15,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 589 proven. 102 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:16,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138068230] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:16,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:16,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 81 [2024-09-12 21:41:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007718973] [2024-09-12 21:41:16,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:16,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-09-12 21:41:16,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-09-12 21:41:16,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 21:41:16,122 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 81 states, 81 states have (on average 1.654320987654321) internal successors, (134), 81 states have internal predecessors, (134), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:21,422 INFO L93 Difference]: Finished difference Result 445 states and 507 transitions. [2024-09-12 21:41:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:41:21,422 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.654320987654321) internal successors, (134), 81 states have internal predecessors, (134), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:41:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:21,425 INFO L225 Difference]: With dead ends: 445 [2024-09-12 21:41:21,425 INFO L226 Difference]: Without dead ends: 377 [2024-09-12 21:41:21,426 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 301 SyntacticMatches, 40 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5068 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1113, Invalid=5529, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:41:21,426 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:21,426 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 364 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:41:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-09-12 21:41:22,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 210. [2024-09-12 21:41:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:41:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:41:22,236 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:41:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:22,236 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:41:22,236 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.654320987654321) internal successors, (134), 81 states have internal predecessors, (134), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:22,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:41:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:41:22,237 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:22,237 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:22,249 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Ended with exit code 0 [2024-09-12 21:41:22,437 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2024-09-12 21:41:22,438 INFO L399 AbstractCegarLoop]: === Iteration 219 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:22,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1546551766, now seen corresponding path program 162 times [2024-09-12 21:41:22,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:22,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098166167] [2024-09-12 21:41:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:41:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:41:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:41:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:41:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:41:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:41:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:41:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:41:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:41:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:41:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:41:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:41:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:41:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:41:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:41:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:41:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:41:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:41:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:41:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 534 proven. 155 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098166167] [2024-09-12 21:41:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098166167] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401922106] [2024-09-12 21:41:23,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:41:23,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:23,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:23,120 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:41:23,121 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2024-09-12 21:41:23,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-09-12 21:41:23,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:23,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:41:23,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 589 proven. 100 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:24,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 589 proven. 100 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:24,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401922106] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:24,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:24,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 80 [2024-09-12 21:41:24,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178669354] [2024-09-12 21:41:24,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:24,777 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-12 21:41:24,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-12 21:41:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=5244, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:41:24,778 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 80 states, 80 states have (on average 1.6625) internal successors, (133), 80 states have internal predecessors, (133), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:30,236 INFO L93 Difference]: Finished difference Result 447 states and 509 transitions. [2024-09-12 21:41:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:41:30,236 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.6625) internal successors, (133), 80 states have internal predecessors, (133), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:41:30,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:30,239 INFO L225 Difference]: With dead ends: 447 [2024-09-12 21:41:30,240 INFO L226 Difference]: Without dead ends: 379 [2024-09-12 21:41:30,240 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 302 SyntacticMatches, 40 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4868 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1084, Invalid=5396, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 21:41:30,240 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:30,240 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 600 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:41:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-12 21:41:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 210. [2024-09-12 21:41:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:41:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:41:31,055 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:41:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:31,055 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:41:31,055 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.6625) internal successors, (133), 80 states have internal predecessors, (133), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:31,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:41:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:41:31,056 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:31,056 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:31,068 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Ended with exit code 0 [2024-09-12 21:41:31,256 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,219 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:31,256 INFO L399 AbstractCegarLoop]: === Iteration 220 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:31,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1107912823, now seen corresponding path program 163 times [2024-09-12 21:41:31,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:31,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196881885] [2024-09-12 21:41:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:41:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:41:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:41:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:41:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:41:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:41:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:41:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:41:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:41:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:41:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:41:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:41:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:41:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:41:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:41:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:41:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:41:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:41:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:41:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 534 proven. 155 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196881885] [2024-09-12 21:41:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196881885] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784624233] [2024-09-12 21:41:31,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:41:31,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:31,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:31,930 INFO L229 MonitoredProcess]: Starting monitored process 220 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:41:31,931 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2024-09-12 21:41:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:31,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:41:31,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 589 proven. 100 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:32,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 589 proven. 100 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:33,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784624233] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:33,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:33,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 79 [2024-09-12 21:41:33,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124837944] [2024-09-12 21:41:33,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:33,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-12 21:41:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-12 21:41:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1051, Invalid=5111, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:41:33,545 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 79 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 79 states have internal predecessors, (132), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:39,022 INFO L93 Difference]: Finished difference Result 447 states and 509 transitions. [2024-09-12 21:41:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:41:39,022 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 79 states have internal predecessors, (132), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:41:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:39,025 INFO L225 Difference]: With dead ends: 447 [2024-09-12 21:41:39,025 INFO L226 Difference]: Without dead ends: 379 [2024-09-12 21:41:39,026 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 303 SyntacticMatches, 40 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4671 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1059, Invalid=5261, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:41:39,026 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:39,026 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 603 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:41:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-12 21:41:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 210. [2024-09-12 21:41:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:41:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:41:39,813 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:41:39,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:39,813 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:41:39,813 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 79 states have internal predecessors, (132), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:39,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:41:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:41:39,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:39,814 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 11, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:39,826 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Ended with exit code 0 [2024-09-12 21:41:40,014 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,220 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:40,014 INFO L399 AbstractCegarLoop]: === Iteration 221 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -707352138, now seen corresponding path program 164 times [2024-09-12 21:41:40,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756545063] [2024-09-12 21:41:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:41:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:41:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:41:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:41:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:41:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:41:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:41:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:41:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:41:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:41:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:41:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:41:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:41:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:41:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:41:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:41:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:41:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:41:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:41:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 534 proven. 157 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756545063] [2024-09-12 21:41:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756545063] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714492182] [2024-09-12 21:41:40,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:41:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:40,688 INFO L229 MonitoredProcess]: Starting monitored process 221 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:41:40,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2024-09-12 21:41:40,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:41:40,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:40,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:41:40,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 589 proven. 102 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:41,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 589 proven. 102 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714492182] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:42,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 78 [2024-09-12 21:41:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772606682] [2024-09-12 21:41:42,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:42,283 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-12 21:41:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-12 21:41:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1030, Invalid=4976, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:41:42,284 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 78 states, 78 states have (on average 1.6794871794871795) internal successors, (131), 78 states have internal predecessors, (131), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:47,661 INFO L93 Difference]: Finished difference Result 445 states and 507 transitions. [2024-09-12 21:41:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:41:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.6794871794871795) internal successors, (131), 78 states have internal predecessors, (131), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:41:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:47,665 INFO L225 Difference]: With dead ends: 445 [2024-09-12 21:41:47,665 INFO L226 Difference]: Without dead ends: 377 [2024-09-12 21:41:47,665 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 304 SyntacticMatches, 40 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4477 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1038, Invalid=5124, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:41:47,666 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:47,666 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 525 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:41:47,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-09-12 21:41:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 210. [2024-09-12 21:41:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:41:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:41:48,490 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:41:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:48,490 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:41:48,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.6794871794871795) internal successors, (131), 78 states have internal predecessors, (131), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:48,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:41:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:41:48,491 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:48,491 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:48,503 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Ended with exit code 0 [2024-09-12 21:41:48,691 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,221 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:48,691 INFO L399 AbstractCegarLoop]: === Iteration 222 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:48,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1597193065, now seen corresponding path program 165 times [2024-09-12 21:41:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:48,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282989038] [2024-09-12 21:41:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:41:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:41:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:41:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:41:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:41:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:41:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:41:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:41:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:41:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:41:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:41:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:41:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:41:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:41:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:41:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:41:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:41:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:41:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:41:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 534 proven. 161 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282989038] [2024-09-12 21:41:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282989038] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60126779] [2024-09-12 21:41:49,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:41:49,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:49,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:49,370 INFO L229 MonitoredProcess]: Starting monitored process 222 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:41:49,371 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2024-09-12 21:41:49,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-09-12 21:41:49,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:49,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:41:49,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 589 proven. 106 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:50,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 589 proven. 106 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:50,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60126779] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:50,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:50,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 77 [2024-09-12 21:41:50,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389296009] [2024-09-12 21:41:50,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:50,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-12 21:41:50,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:50,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-12 21:41:50,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1013, Invalid=4839, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:41:50,982 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 77 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 77 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:41:56,321 INFO L93 Difference]: Finished difference Result 441 states and 503 transitions. [2024-09-12 21:41:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:41:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 77 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:41:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:41:56,324 INFO L225 Difference]: With dead ends: 441 [2024-09-12 21:41:56,324 INFO L226 Difference]: Without dead ends: 373 [2024-09-12 21:41:56,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 305 SyntacticMatches, 40 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4286 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1021, Invalid=4985, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 21:41:56,325 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:41:56,325 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 697 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:41:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-09-12 21:41:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 210. [2024-09-12 21:41:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:41:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:41:57,144 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:41:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:41:57,144 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:41:57,144 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 77 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:41:57,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:41:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:41:57,145 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:41:57,145 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 13, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:41:57,156 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Ended with exit code 0 [2024-09-12 21:41:57,345 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2024-09-12 21:41:57,345 INFO L399 AbstractCegarLoop]: === Iteration 223 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:41:57,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:41:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash -517518954, now seen corresponding path program 166 times [2024-09-12 21:41:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:41:57,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423371730] [2024-09-12 21:41:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:41:57,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:41:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:41:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:41:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:41:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:41:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:41:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:41:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:41:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:41:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:41:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:41:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:41:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:41:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:41:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:41:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:41:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:41:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:41:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:41:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:41:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:41:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:41:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 534 proven. 167 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:58,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:41:58,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423371730] [2024-09-12 21:41:58,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423371730] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:41:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297958781] [2024-09-12 21:41:58,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:41:58,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:41:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:41:58,028 INFO L229 MonitoredProcess]: Starting monitored process 223 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:41:58,028 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Waiting until timeout for monitored process [2024-09-12 21:41:58,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:41:58,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:41:58,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:41:58,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:41:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 589 proven. 112 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:59,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:41:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 589 proven. 112 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:41:59,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297958781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:41:59,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:41:59,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 76 [2024-09-12 21:41:59,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509696528] [2024-09-12 21:41:59,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:41:59,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-12 21:41:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:41:59,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-12 21:41:59,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=4700, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:41:59,603 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 76 states, 76 states have (on average 1.6973684210526316) internal successors, (129), 76 states have internal predecessors, (129), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:04,548 INFO L93 Difference]: Finished difference Result 435 states and 497 transitions. [2024-09-12 21:42:04,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:42:04,548 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.6973684210526316) internal successors, (129), 76 states have internal predecessors, (129), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:42:04,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:04,551 INFO L225 Difference]: With dead ends: 435 [2024-09-12 21:42:04,551 INFO L226 Difference]: Without dead ends: 367 [2024-09-12 21:42:04,552 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 306 SyntacticMatches, 40 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4098 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1008, Invalid=4844, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 21:42:04,552 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:04,552 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 424 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:42:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-09-12 21:42:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 210. [2024-09-12 21:42:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:42:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:42:05,364 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:42:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:05,364 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:42:05,364 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.6973684210526316) internal successors, (129), 76 states have internal predecessors, (129), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:05,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:42:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:42:05,365 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:05,365 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 14, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:05,377 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Ended with exit code 0 [2024-09-12 21:42:05,565 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 223 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2024-09-12 21:42:05,565 INFO L399 AbstractCegarLoop]: === Iteration 224 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:05,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash -621238089, now seen corresponding path program 167 times [2024-09-12 21:42:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796326824] [2024-09-12 21:42:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:42:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:42:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:42:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:42:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:42:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:42:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:42:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:42:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:42:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:42:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:42:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:42:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:42:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:42:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:42:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:42:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:42:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:42:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:42:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 534 proven. 175 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:06,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796326824] [2024-09-12 21:42:06,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796326824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571108270] [2024-09-12 21:42:06,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:42:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:06,240 INFO L229 MonitoredProcess]: Starting monitored process 224 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:06,240 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Waiting until timeout for monitored process [2024-09-12 21:42:06,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-09-12 21:42:06,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:06,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:42:06,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 589 proven. 120 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:07,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 589 proven. 120 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:07,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571108270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:07,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:07,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 75 [2024-09-12 21:42:07,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155327766] [2024-09-12 21:42:07,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:07,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 21:42:07,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 21:42:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=4559, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:42:07,802 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 75 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 75 states have internal predecessors, (128), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:12,494 INFO L93 Difference]: Finished difference Result 427 states and 489 transitions. [2024-09-12 21:42:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:42:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 75 states have internal predecessors, (128), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:42:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:12,498 INFO L225 Difference]: With dead ends: 427 [2024-09-12 21:42:12,498 INFO L226 Difference]: Without dead ends: 359 [2024-09-12 21:42:12,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 307 SyntacticMatches, 40 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3913 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=999, Invalid=4701, Unknown=0, NotChecked=0, Total=5700 [2024-09-12 21:42:12,499 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:12,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 464 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:42:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-09-12 21:42:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 210. [2024-09-12 21:42:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:42:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:42:13,308 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:42:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:13,308 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:42:13,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 75 states have internal predecessors, (128), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:13,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:42:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:42:13,309 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:13,309 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 15, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:13,321 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Ended with exit code 0 [2024-09-12 21:42:13,509 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2024-09-12 21:42:13,510 INFO L399 AbstractCegarLoop]: === Iteration 225 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:13,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:13,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1037984118, now seen corresponding path program 168 times [2024-09-12 21:42:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:13,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426862598] [2024-09-12 21:42:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:13,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:42:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:42:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:42:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:42:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:42:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:42:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:42:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:42:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:42:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:42:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:42:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:42:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:42:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:42:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:42:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:42:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:42:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:42:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:42:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 534 proven. 185 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:14,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:14,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426862598] [2024-09-12 21:42:14,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426862598] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:14,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020319040] [2024-09-12 21:42:14,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:42:14,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:14,184 INFO L229 MonitoredProcess]: Starting monitored process 225 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:14,185 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Waiting until timeout for monitored process [2024-09-12 21:42:14,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-09-12 21:42:14,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:14,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:42:14,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 589 proven. 130 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:15,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 589 proven. 130 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:15,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020319040] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:15,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:15,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 74 [2024-09-12 21:42:15,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518911893] [2024-09-12 21:42:15,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:15,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-12 21:42:15,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:15,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-12 21:42:15,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=986, Invalid=4416, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:42:15,726 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 74 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 74 states have internal predecessors, (127), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:20,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:20,062 INFO L93 Difference]: Finished difference Result 417 states and 479 transitions. [2024-09-12 21:42:20,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:42:20,063 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 74 states have internal predecessors, (127), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:42:20,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:20,066 INFO L225 Difference]: With dead ends: 417 [2024-09-12 21:42:20,066 INFO L226 Difference]: Without dead ends: 349 [2024-09-12 21:42:20,067 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 308 SyntacticMatches, 40 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3731 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=994, Invalid=4556, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:42:20,067 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:20,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 658 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:42:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-09-12 21:42:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 210. [2024-09-12 21:42:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:42:20,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:42:20,872 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:42:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:20,872 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:42:20,872 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 74 states have internal predecessors, (127), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:20,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:42:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:42:20,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:20,873 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 16, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:20,885 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Ended with exit code 0 [2024-09-12 21:42:21,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 225 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2024-09-12 21:42:21,074 INFO L399 AbstractCegarLoop]: === Iteration 226 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:21,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1091507415, now seen corresponding path program 169 times [2024-09-12 21:42:21,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161624267] [2024-09-12 21:42:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:42:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:42:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:42:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:42:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:42:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:42:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:42:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:42:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:42:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:42:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:42:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:42:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:42:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:42:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:42:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:42:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:42:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:42:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:42:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 534 proven. 197 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:21,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:21,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161624267] [2024-09-12 21:42:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161624267] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248568270] [2024-09-12 21:42:21,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:42:21,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:21,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:21,750 INFO L229 MonitoredProcess]: Starting monitored process 226 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:21,750 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Waiting until timeout for monitored process [2024-09-12 21:42:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:21,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:42:21,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 589 proven. 142 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:22,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 589 proven. 142 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248568270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:23,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 73 [2024-09-12 21:42:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594765295] [2024-09-12 21:42:23,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:23,278 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 21:42:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 21:42:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=985, Invalid=4271, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:42:23,279 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 73 states, 73 states have (on average 1.726027397260274) internal successors, (126), 73 states have internal predecessors, (126), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:27,398 INFO L93 Difference]: Finished difference Result 405 states and 467 transitions. [2024-09-12 21:42:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:42:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.726027397260274) internal successors, (126), 73 states have internal predecessors, (126), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:42:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:27,401 INFO L225 Difference]: With dead ends: 405 [2024-09-12 21:42:27,401 INFO L226 Difference]: Without dead ends: 337 [2024-09-12 21:42:27,402 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 309 SyntacticMatches, 40 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3552 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=993, Invalid=4409, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 21:42:27,402 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:27,402 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 628 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:42:27,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-09-12 21:42:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 210. [2024-09-12 21:42:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:42:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:42:28,301 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:42:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:28,302 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:42:28,302 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.726027397260274) internal successors, (126), 73 states have internal predecessors, (126), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:28,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:42:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:42:28,302 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:28,302 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:28,315 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Ended with exit code 0 [2024-09-12 21:42:28,503 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,226 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:28,503 INFO L399 AbstractCegarLoop]: === Iteration 227 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:28,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2093354666, now seen corresponding path program 170 times [2024-09-12 21:42:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:28,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976999951] [2024-09-12 21:42:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:28,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:42:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:42:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:42:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:42:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:42:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:42:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:42:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:42:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:42:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:42:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:42:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:42:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:42:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:42:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:42:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:42:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:42:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:42:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:42:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 534 proven. 211 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976999951] [2024-09-12 21:42:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976999951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848555871] [2024-09-12 21:42:29,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:42:29,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:29,208 INFO L229 MonitoredProcess]: Starting monitored process 227 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:29,209 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Waiting until timeout for monitored process [2024-09-12 21:42:29,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:42:29,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:29,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:42:29,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 589 proven. 156 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:30,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 589 proven. 156 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:30,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848555871] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:30,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:30,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 72 [2024-09-12 21:42:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471167352] [2024-09-12 21:42:30,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:30,737 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 21:42:30,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:30,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 21:42:30,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=988, Invalid=4124, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:42:30,738 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 72 states have internal predecessors, (125), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:34,178 INFO L93 Difference]: Finished difference Result 391 states and 453 transitions. [2024-09-12 21:42:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:42:34,178 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 72 states have internal predecessors, (125), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:42:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:34,182 INFO L225 Difference]: With dead ends: 391 [2024-09-12 21:42:34,182 INFO L226 Difference]: Without dead ends: 323 [2024-09-12 21:42:34,182 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 310 SyntacticMatches, 40 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3376 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=996, Invalid=4260, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:42:34,182 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:34,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 438 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:42:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-12 21:42:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 210. [2024-09-12 21:42:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:42:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:42:35,062 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:42:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:35,062 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:42:35,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 72 states have internal predecessors, (125), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:35,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:42:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:42:35,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:35,063 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:35,075 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Ended with exit code 0 [2024-09-12 21:42:35,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2024-09-12 21:42:35,263 INFO L399 AbstractCegarLoop]: === Iteration 228 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:35,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1544685815, now seen corresponding path program 171 times [2024-09-12 21:42:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255987506] [2024-09-12 21:42:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:42:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:42:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:42:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:42:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:42:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:42:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:42:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:42:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:42:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:42:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:42:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:42:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:42:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:42:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:42:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:42:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:42:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:42:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:42:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 534 proven. 227 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:35,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:35,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255987506] [2024-09-12 21:42:35,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255987506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:35,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35293606] [2024-09-12 21:42:35,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:42:35,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:35,959 INFO L229 MonitoredProcess]: Starting monitored process 228 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:35,960 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Waiting until timeout for monitored process [2024-09-12 21:42:36,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-09-12 21:42:36,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:36,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:42:36,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 589 proven. 172 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:36,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 589 proven. 172 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:37,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35293606] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:37,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:37,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 71 [2024-09-12 21:42:37,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185644943] [2024-09-12 21:42:37,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:37,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:42:37,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:42:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=995, Invalid=3975, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:42:37,490 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 71 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:40,330 INFO L93 Difference]: Finished difference Result 375 states and 437 transitions. [2024-09-12 21:42:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:42:40,331 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:42:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:40,334 INFO L225 Difference]: With dead ends: 375 [2024-09-12 21:42:40,334 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 21:42:40,335 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 311 SyntacticMatches, 40 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1003, Invalid=4109, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 21:42:40,335 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:40,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 655 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:42:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 21:42:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 210. [2024-09-12 21:42:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:42:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-09-12 21:42:41,184 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 168 [2024-09-12 21:42:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:41,184 INFO L474 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-09-12 21:42:41,184 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:41,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-09-12 21:42:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 21:42:41,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:41,185 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:41,197 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Forceful destruction successful, exit code 0 [2024-09-12 21:42:41,385 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2024-09-12 21:42:41,385 INFO L399 AbstractCegarLoop]: === Iteration 229 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:41,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash -526026, now seen corresponding path program 19 times [2024-09-12 21:42:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158427825] [2024-09-12 21:42:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:42:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:42:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:42:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:42:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:42:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:42:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:42:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:42:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:42:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:42:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:42:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:42:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:42:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:42:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:42:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:42:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:42:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:42:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:42:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:42,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158427825] [2024-09-12 21:42:42,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158427825] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:42,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675560831] [2024-09-12 21:42:42,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:42:42,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:42,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:42,089 INFO L229 MonitoredProcess]: Starting monitored process 229 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:42,090 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Waiting until timeout for monitored process [2024-09-12 21:42:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:42,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:42:42,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:42,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675560831] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:43,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:43,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 70 [2024-09-12 21:42:43,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23873885] [2024-09-12 21:42:43,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:43,588 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 21:42:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 21:42:43,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=3824, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 21:42:43,589 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 70 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:45,696 INFO L93 Difference]: Finished difference Result 360 states and 423 transitions. [2024-09-12 21:42:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:42:45,697 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 168 [2024-09-12 21:42:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:45,700 INFO L225 Difference]: With dead ends: 360 [2024-09-12 21:42:45,700 INFO L226 Difference]: Without dead ends: 292 [2024-09-12 21:42:45,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 312 SyntacticMatches, 40 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3015 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1014, Invalid=3956, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:42:45,701 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:45,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 562 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:42:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-09-12 21:42:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 212. [2024-09-12 21:42:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 168 states have (on average 1.1369047619047619) internal successors, (191), 169 states have internal predecessors, (191), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:42:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 234 transitions. [2024-09-12 21:42:46,565 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 234 transitions. Word has length 168 [2024-09-12 21:42:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:46,566 INFO L474 AbstractCegarLoop]: Abstraction has 212 states and 234 transitions. [2024-09-12 21:42:46,566 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:42:46,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 234 transitions. [2024-09-12 21:42:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-09-12 21:42:46,566 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:46,567 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:46,579 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Ended with exit code 0 [2024-09-12 21:42:46,767 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2024-09-12 21:42:46,767 INFO L399 AbstractCegarLoop]: === Iteration 230 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:46,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2083239614, now seen corresponding path program 38 times [2024-09-12 21:42:46,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:46,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013932238] [2024-09-12 21:42:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:46,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:42:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:42:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:42:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:42:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:42:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:42:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:42:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:42:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:42:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:42:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:42:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:42:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:42:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:42:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:42:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:42:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:42:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:42:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:42:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:47,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:47,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013932238] [2024-09-12 21:42:47,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013932238] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:47,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516975268] [2024-09-12 21:42:47,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:42:47,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:47,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:47,169 INFO L229 MonitoredProcess]: Starting monitored process 230 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:47,170 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Waiting until timeout for monitored process [2024-09-12 21:42:47,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:42:47,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:47,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 21:42:47,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:47,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:42:47,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516975268] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:47,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:47,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-12 21:42:47,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71429793] [2024-09-12 21:42:47,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:47,736 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 21:42:47,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 21:42:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-12 21:42:47,737 INFO L87 Difference]: Start difference. First operand 212 states and 234 transitions. Second operand has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 26 states have internal predecessors, (81), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:42:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:48,799 INFO L93 Difference]: Finished difference Result 225 states and 248 transitions. [2024-09-12 21:42:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 21:42:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 26 states have internal predecessors, (81), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 169 [2024-09-12 21:42:48,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:48,803 INFO L225 Difference]: With dead ends: 225 [2024-09-12 21:42:48,803 INFO L226 Difference]: Without dead ends: 223 [2024-09-12 21:42:48,803 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 353 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-12 21:42:48,803 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 44 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:48,803 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 463 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:42:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-09-12 21:42:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2024-09-12 21:42:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 173 states have (on average 1.1329479768786128) internal successors, (196), 174 states have internal predecessors, (196), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:42:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 241 transitions. [2024-09-12 21:42:49,679 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 241 transitions. Word has length 169 [2024-09-12 21:42:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:49,679 INFO L474 AbstractCegarLoop]: Abstraction has 219 states and 241 transitions. [2024-09-12 21:42:49,679 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 26 states have internal predecessors, (81), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:42:49,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 241 transitions. [2024-09-12 21:42:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:42:49,680 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:49,680 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:49,692 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Forceful destruction successful, exit code 0 [2024-09-12 21:42:49,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,230 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:49,880 INFO L399 AbstractCegarLoop]: === Iteration 231 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:49,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash 875758038, now seen corresponding path program 39 times [2024-09-12 21:42:49,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:49,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302252913] [2024-09-12 21:42:49,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:49,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:42:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:42:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:42:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:42:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:42:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:42:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:42:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:42:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:42:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:42:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:42:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:42:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:42:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:42:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:42:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:42:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:42:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:42:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:42:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:42:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:42:50,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:50,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302252913] [2024-09-12 21:42:50,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302252913] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:50,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732686479] [2024-09-12 21:42:50,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:42:50,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:50,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:50,673 INFO L229 MonitoredProcess]: Starting monitored process 231 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:50,673 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Waiting until timeout for monitored process [2024-09-12 21:42:50,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-12 21:42:50,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:50,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:42:50,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:42:52,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:42:52,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732686479] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:52,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:52,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2024-09-12 21:42:52,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344684741] [2024-09-12 21:42:52,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:52,783 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-09-12 21:42:52,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:52,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-09-12 21:42:52,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1617, Invalid=6939, Unknown=0, NotChecked=0, Total=8556 [2024-09-12 21:42:52,785 INFO L87 Difference]: Start difference. First operand 219 states and 241 transitions. Second operand has 93 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 93 states have internal predecessors, (148), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:42:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:42:54,998 INFO L93 Difference]: Finished difference Result 374 states and 439 transitions. [2024-09-12 21:42:54,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:42:54,999 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 93 states have internal predecessors, (148), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:42:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:42:55,002 INFO L225 Difference]: With dead ends: 374 [2024-09-12 21:42:55,002 INFO L226 Difference]: Without dead ends: 303 [2024-09-12 21:42:55,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 307 SyntacticMatches, 42 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1625, Invalid=7117, Unknown=0, NotChecked=0, Total=8742 [2024-09-12 21:42:55,003 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:42:55,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 550 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:42:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-09-12 21:42:55,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 220. [2024-09-12 21:42:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:42:55,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:42:55,933 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:42:55,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:42:55,933 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:42:55,933 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 93 states have internal predecessors, (148), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:42:55,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:42:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:42:55,934 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:42:55,934 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:42:55,949 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Ended with exit code 0 [2024-09-12 21:42:56,134 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,231 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:56,135 INFO L399 AbstractCegarLoop]: === Iteration 232 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:42:56,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:42:56,135 INFO L85 PathProgramCache]: Analyzing trace with hash 780144981, now seen corresponding path program 172 times [2024-09-12 21:42:56,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:42:56,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288796762] [2024-09-12 21:42:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:42:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:42:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:42:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:42:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:42:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:42:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:42:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:42:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:42:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:42:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:42:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:42:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:42:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:42:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:42:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:42:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:42:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:42:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:42:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:42:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:42:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:42:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:42:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:42:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 592 proven. 249 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:42:56,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:42:56,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288796762] [2024-09-12 21:42:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288796762] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:42:56,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250839007] [2024-09-12 21:42:56,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:42:56,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:42:56,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:42:56,911 INFO L229 MonitoredProcess]: Starting monitored process 232 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:42:56,912 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Waiting until timeout for monitored process [2024-09-12 21:42:56,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:42:56,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:42:56,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:42:56,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:42:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 650 proven. 191 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:42:58,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:42:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 650 proven. 191 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:42:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250839007] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:42:58,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:42:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 92 [2024-09-12 21:42:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223050049] [2024-09-12 21:42:58,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:42:58,924 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-12 21:42:58,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:42:58,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-12 21:42:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1553, Invalid=6819, Unknown=0, NotChecked=0, Total=8372 [2024-09-12 21:42:58,926 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 92 states, 92 states have (on average 1.5978260869565217) internal successors, (147), 92 states have internal predecessors, (147), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:01,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:43:01,993 INFO L93 Difference]: Finished difference Result 393 states and 458 transitions. [2024-09-12 21:43:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:43:01,993 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5978260869565217) internal successors, (147), 92 states have internal predecessors, (147), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:43:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:43:01,997 INFO L225 Difference]: With dead ends: 393 [2024-09-12 21:43:01,997 INFO L226 Difference]: Without dead ends: 322 [2024-09-12 21:43:01,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 308 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7206 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1561, Invalid=6995, Unknown=0, NotChecked=0, Total=8556 [2024-09-12 21:43:01,997 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:43:01,997 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 588 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:43:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-09-12 21:43:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 220. [2024-09-12 21:43:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:43:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:43:02,939 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:43:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:43:02,939 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:43:02,939 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5978260869565217) internal successors, (147), 92 states have internal predecessors, (147), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:02,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:43:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:43:02,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:43:02,940 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:43:02,952 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Ended with exit code 0 [2024-09-12 21:43:03,140 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,232 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:03,140 INFO L399 AbstractCegarLoop]: === Iteration 233 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:43:03,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2023986678, now seen corresponding path program 173 times [2024-09-12 21:43:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:43:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358334860] [2024-09-12 21:43:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:43:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:43:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:43:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:43:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:43:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:43:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:43:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:43:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:43:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:43:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:43:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:43:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:43:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:43:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:43:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:43:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:43:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:43:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:43:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:43:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:43:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:43:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:43:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 592 proven. 232 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:43:03,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358334860] [2024-09-12 21:43:03,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358334860] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:43:03,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803339796] [2024-09-12 21:43:03,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:43:03,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:03,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:43:03,917 INFO L229 MonitoredProcess]: Starting monitored process 233 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:43:03,918 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Waiting until timeout for monitored process [2024-09-12 21:43:03,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-09-12 21:43:03,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:43:03,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:43:03,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:43:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 650 proven. 174 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:05,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:43:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 650 proven. 174 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803339796] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:43:05,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:43:05,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 91 [2024-09-12 21:43:05,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796536392] [2024-09-12 21:43:05,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:43:05,923 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-12 21:43:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:43:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-12 21:43:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1493, Invalid=6697, Unknown=0, NotChecked=0, Total=8190 [2024-09-12 21:43:05,925 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 91 states, 91 states have (on average 1.6043956043956045) internal successors, (146), 91 states have internal predecessors, (146), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:43:09,670 INFO L93 Difference]: Finished difference Result 410 states and 475 transitions. [2024-09-12 21:43:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:43:09,671 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.6043956043956045) internal successors, (146), 91 states have internal predecessors, (146), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:43:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:43:09,674 INFO L225 Difference]: With dead ends: 410 [2024-09-12 21:43:09,674 INFO L226 Difference]: Without dead ends: 339 [2024-09-12 21:43:09,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 309 SyntacticMatches, 42 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6974 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1501, Invalid=6871, Unknown=0, NotChecked=0, Total=8372 [2024-09-12 21:43:09,675 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:43:09,675 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 486 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:43:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-12 21:43:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 220. [2024-09-12 21:43:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:43:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:43:10,639 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:43:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:43:10,639 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:43:10,639 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.6043956043956045) internal successors, (146), 91 states have internal predecessors, (146), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:10,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:43:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:43:10,640 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:43:10,640 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 17, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:43:10,652 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Ended with exit code 0 [2024-09-12 21:43:10,840 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2024-09-12 21:43:10,841 INFO L399 AbstractCegarLoop]: === Iteration 234 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:43:10,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash -845383371, now seen corresponding path program 174 times [2024-09-12 21:43:10,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:43:10,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077772399] [2024-09-12 21:43:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:43:10,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:43:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:43:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:43:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:43:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:43:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:43:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:43:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:43:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:43:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:43:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:43:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:43:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:43:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:43:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:43:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:43:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:43:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:43:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:43:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:43:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:43:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:43:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 592 proven. 217 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:11,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:43:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077772399] [2024-09-12 21:43:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077772399] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:43:11,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897423436] [2024-09-12 21:43:11,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:43:11,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:11,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:43:11,603 INFO L229 MonitoredProcess]: Starting monitored process 234 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:43:11,603 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Waiting until timeout for monitored process [2024-09-12 21:43:11,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-09-12 21:43:11,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:43:11,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:43:11,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:43:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 650 proven. 159 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:12,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:43:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 650 proven. 159 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897423436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:43:13,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:43:13,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 90 [2024-09-12 21:43:13,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289985694] [2024-09-12 21:43:13,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:43:13,589 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-12 21:43:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:43:13,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-12 21:43:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1437, Invalid=6573, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 21:43:13,590 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 90 states, 90 states have (on average 1.6111111111111112) internal successors, (145), 90 states have internal predecessors, (145), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:43:17,968 INFO L93 Difference]: Finished difference Result 425 states and 490 transitions. [2024-09-12 21:43:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:43:17,968 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.6111111111111112) internal successors, (145), 90 states have internal predecessors, (145), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:43:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:43:17,971 INFO L225 Difference]: With dead ends: 425 [2024-09-12 21:43:17,971 INFO L226 Difference]: Without dead ends: 354 [2024-09-12 21:43:17,972 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 310 SyntacticMatches, 42 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6745 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1445, Invalid=6745, Unknown=0, NotChecked=0, Total=8190 [2024-09-12 21:43:17,972 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:43:17,972 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:43:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-09-12 21:43:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 220. [2024-09-12 21:43:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:43:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:43:18,951 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:43:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:43:18,951 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:43:18,951 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.6111111111111112) internal successors, (145), 90 states have internal predecessors, (145), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:18,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:43:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:43:18,952 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:43:18,952 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:43:18,964 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Ended with exit code 0 [2024-09-12 21:43:19,152 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 234 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2024-09-12 21:43:19,153 INFO L399 AbstractCegarLoop]: === Iteration 235 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:43:19,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash 308982294, now seen corresponding path program 175 times [2024-09-12 21:43:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:43:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505981682] [2024-09-12 21:43:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:43:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:43:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:43:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:43:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:43:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:43:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:43:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:43:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:43:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:43:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:43:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:43:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:43:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:43:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:43:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:43:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:43:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:43:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:43:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:43:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:43:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:43:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:43:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 592 proven. 204 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:19,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:43:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505981682] [2024-09-12 21:43:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505981682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:43:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485925339] [2024-09-12 21:43:19,914 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:43:19,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:19,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:43:19,916 INFO L229 MonitoredProcess]: Starting monitored process 235 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:43:19,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Waiting until timeout for monitored process [2024-09-12 21:43:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:19,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:43:19,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:43:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 650 proven. 146 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:21,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:43:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 650 proven. 146 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485925339] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:43:21,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:43:21,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 89 [2024-09-12 21:43:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874626126] [2024-09-12 21:43:21,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:43:21,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-12 21:43:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:43:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-12 21:43:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1385, Invalid=6447, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:43:21,880 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 89 states, 89 states have (on average 1.6179775280898876) internal successors, (144), 89 states have internal predecessors, (144), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:43:27,019 INFO L93 Difference]: Finished difference Result 438 states and 503 transitions. [2024-09-12 21:43:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:43:27,019 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.6179775280898876) internal successors, (144), 89 states have internal predecessors, (144), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:43:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:43:27,023 INFO L225 Difference]: With dead ends: 438 [2024-09-12 21:43:27,023 INFO L226 Difference]: Without dead ends: 367 [2024-09-12 21:43:27,023 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 311 SyntacticMatches, 42 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6519 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1393, Invalid=6617, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 21:43:27,023 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:43:27,023 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 580 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:43:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-09-12 21:43:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 220. [2024-09-12 21:43:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:43:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:43:28,011 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:43:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:43:28,011 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:43:28,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.6179775280898876) internal successors, (144), 89 states have internal predecessors, (144), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:28,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:43:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:43:28,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:43:28,012 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 15, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:43:28,024 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Ended with exit code 0 [2024-09-12 21:43:28,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234,235 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:28,213 INFO L399 AbstractCegarLoop]: === Iteration 236 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:43:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1316051221, now seen corresponding path program 176 times [2024-09-12 21:43:28,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:43:28,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932067644] [2024-09-12 21:43:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:43:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:43:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:43:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:43:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:43:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:43:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:43:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:43:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:43:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:43:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:43:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:43:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:43:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:43:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:43:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:43:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:43:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:43:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:43:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:43:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:43:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:43:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:43:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 592 proven. 193 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:43:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932067644] [2024-09-12 21:43:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932067644] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:43:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253876658] [2024-09-12 21:43:28,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:43:28,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:28,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:43:28,974 INFO L229 MonitoredProcess]: Starting monitored process 236 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:43:28,975 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Waiting until timeout for monitored process [2024-09-12 21:43:29,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:43:29,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:43:29,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:43:29,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:43:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 650 proven. 135 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:30,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:43:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 650 proven. 135 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:30,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253876658] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:43:30,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:43:30,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 88 [2024-09-12 21:43:30,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255054760] [2024-09-12 21:43:30,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:43:30,895 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-12 21:43:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:43:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-12 21:43:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1337, Invalid=6319, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 21:43:30,897 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 88 states, 88 states have (on average 1.625) internal successors, (143), 88 states have internal predecessors, (143), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:43:36,584 INFO L93 Difference]: Finished difference Result 449 states and 514 transitions. [2024-09-12 21:43:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:43:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.625) internal successors, (143), 88 states have internal predecessors, (143), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:43:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:43:36,588 INFO L225 Difference]: With dead ends: 449 [2024-09-12 21:43:36,588 INFO L226 Difference]: Without dead ends: 378 [2024-09-12 21:43:36,588 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 312 SyntacticMatches, 42 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6296 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1345, Invalid=6487, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:43:36,589 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:43:36,589 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 482 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:43:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-09-12 21:43:37,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 220. [2024-09-12 21:43:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:43:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:43:37,599 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:43:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:43:37,599 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:43:37,600 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.625) internal successors, (143), 88 states have internal predecessors, (143), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:37,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:43:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:43:37,600 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:43:37,600 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 14, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:43:37,612 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Ended with exit code 0 [2024-09-12 21:43:37,801 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 236 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2024-09-12 21:43:37,801 INFO L399 AbstractCegarLoop]: === Iteration 237 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:43:37,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:37,801 INFO L85 PathProgramCache]: Analyzing trace with hash -175483338, now seen corresponding path program 177 times [2024-09-12 21:43:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:43:37,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329158366] [2024-09-12 21:43:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:43:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:43:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:43:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:43:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:43:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:43:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:43:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:43:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:43:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:43:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:43:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:43:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:43:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:43:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:43:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:43:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:43:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:43:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:43:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:43:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:43:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:43:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:43:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 592 proven. 184 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:38,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:43:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329158366] [2024-09-12 21:43:38,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329158366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:43:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818821318] [2024-09-12 21:43:38,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:43:38,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:38,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:43:38,555 INFO L229 MonitoredProcess]: Starting monitored process 237 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:43:38,556 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Waiting until timeout for monitored process [2024-09-12 21:43:38,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-12 21:43:38,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:43:38,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:43:38,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:43:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 650 proven. 126 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:39,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:43:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 650 proven. 126 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:40,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818821318] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:43:40,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:43:40,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 87 [2024-09-12 21:43:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410838748] [2024-09-12 21:43:40,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:43:40,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-09-12 21:43:40,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:43:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-09-12 21:43:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1293, Invalid=6189, Unknown=0, NotChecked=0, Total=7482 [2024-09-12 21:43:40,453 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 87 states, 87 states have (on average 1.632183908045977) internal successors, (142), 87 states have internal predecessors, (142), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:43:46,736 INFO L93 Difference]: Finished difference Result 458 states and 523 transitions. [2024-09-12 21:43:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:43:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.632183908045977) internal successors, (142), 87 states have internal predecessors, (142), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:43:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:43:46,740 INFO L225 Difference]: With dead ends: 458 [2024-09-12 21:43:46,740 INFO L226 Difference]: Without dead ends: 387 [2024-09-12 21:43:46,740 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 313 SyntacticMatches, 42 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6076 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1301, Invalid=6355, Unknown=0, NotChecked=0, Total=7656 [2024-09-12 21:43:46,741 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:43:46,741 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 410 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:43:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-12 21:43:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 220. [2024-09-12 21:43:47,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:43:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:43:47,748 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:43:47,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:43:47,749 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:43:47,749 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.632183908045977) internal successors, (142), 87 states have internal predecessors, (142), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:47,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:47,749 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:43:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:43:47,749 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:43:47,750 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 13, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:43:47,762 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Ended with exit code 0 [2024-09-12 21:43:47,950 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2024-09-12 21:43:47,950 INFO L399 AbstractCegarLoop]: === Iteration 238 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:43:47,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash 884781301, now seen corresponding path program 178 times [2024-09-12 21:43:47,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:43:47,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874655945] [2024-09-12 21:43:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:43:47,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:43:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:43:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:43:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:43:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:43:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:43:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:43:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:43:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:43:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:43:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:43:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:43:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:43:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:43:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:43:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:43:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:43:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:43:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:43:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:43:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:43:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:43:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 592 proven. 177 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:48,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:43:48,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874655945] [2024-09-12 21:43:48,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874655945] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:43:48,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383126485] [2024-09-12 21:43:48,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:43:48,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:43:48,694 INFO L229 MonitoredProcess]: Starting monitored process 238 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:43:48,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Waiting until timeout for monitored process [2024-09-12 21:43:48,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:43:48,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:43:48,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:43:48,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:43:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 650 proven. 119 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:49,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:43:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 650 proven. 119 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383126485] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:43:50,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:43:50,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 86 [2024-09-12 21:43:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704395898] [2024-09-12 21:43:50,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:43:50,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-12 21:43:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:43:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-12 21:43:50,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1253, Invalid=6057, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 21:43:50,548 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 86 states, 86 states have (on average 1.6395348837209303) internal successors, (141), 86 states have internal predecessors, (141), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:43:57,274 INFO L93 Difference]: Finished difference Result 465 states and 530 transitions. [2024-09-12 21:43:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:43:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.6395348837209303) internal successors, (141), 86 states have internal predecessors, (141), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:43:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:43:57,278 INFO L225 Difference]: With dead ends: 465 [2024-09-12 21:43:57,278 INFO L226 Difference]: Without dead ends: 394 [2024-09-12 21:43:57,279 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 314 SyntacticMatches, 42 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1261, Invalid=6221, Unknown=0, NotChecked=0, Total=7482 [2024-09-12 21:43:57,279 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:43:57,279 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 542 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:43:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-09-12 21:43:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 220. [2024-09-12 21:43:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:43:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:43:58,292 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:43:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:43:58,292 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:43:58,292 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.6395348837209303) internal successors, (141), 86 states have internal predecessors, (141), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:43:58,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:43:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:43:58,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:43:58,293 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 12, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:43:58,305 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Ended with exit code 0 [2024-09-12 21:43:58,493 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 238 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2024-09-12 21:43:58,493 INFO L399 AbstractCegarLoop]: === Iteration 239 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:43:58,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:43:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash 780436054, now seen corresponding path program 179 times [2024-09-12 21:43:58,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:43:58,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137097071] [2024-09-12 21:43:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:43:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:43:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:43:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:43:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:43:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:43:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:43:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:43:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:43:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:43:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:43:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:43:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:43:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:43:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:43:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:43:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:43:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:43:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:43:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:43:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:43:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:43:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:43:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:43:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 592 proven. 172 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:43:59,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:43:59,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137097071] [2024-09-12 21:43:59,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137097071] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:43:59,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345897342] [2024-09-12 21:43:59,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:43:59,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:43:59,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:43:59,237 INFO L229 MonitoredProcess]: Starting monitored process 239 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:43:59,238 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Waiting until timeout for monitored process [2024-09-12 21:43:59,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-09-12 21:43:59,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:43:59,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:43:59,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 650 proven. 114 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:00,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 650 proven. 114 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:01,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345897342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:01,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:01,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 85 [2024-09-12 21:44:01,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490335143] [2024-09-12 21:44:01,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:01,091 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-09-12 21:44:01,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-09-12 21:44:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1217, Invalid=5923, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 21:44:01,092 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 85 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 85 states have internal predecessors, (140), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:08,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:08,131 INFO L93 Difference]: Finished difference Result 470 states and 535 transitions. [2024-09-12 21:44:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:44:08,131 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 85 states have internal predecessors, (140), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:44:08,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:08,134 INFO L225 Difference]: With dead ends: 470 [2024-09-12 21:44:08,135 INFO L226 Difference]: Without dead ends: 399 [2024-09-12 21:44:08,135 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 315 SyntacticMatches, 42 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5645 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1225, Invalid=6085, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 21:44:08,135 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:08,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 494 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:44:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-09-12 21:44:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 220. [2024-09-12 21:44:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:44:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:44:09,142 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:44:09,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:09,142 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:44:09,142 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 85 states have internal predecessors, (140), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:09,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:44:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:44:09,143 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:09,143 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 11, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:09,155 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Ended with exit code 0 [2024-09-12 21:44:09,343 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2024-09-12 21:44:09,343 INFO L399 AbstractCegarLoop]: === Iteration 240 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:09,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash -608403243, now seen corresponding path program 180 times [2024-09-12 21:44:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:09,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531958897] [2024-09-12 21:44:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:44:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:44:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:44:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:44:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:44:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:44:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:44:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:44:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:44:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:44:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:44:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:44:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:44:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:44:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:44:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:44:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:44:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:44:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:44:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:44:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 592 proven. 169 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531958897] [2024-09-12 21:44:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531958897] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933510075] [2024-09-12 21:44:10,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:44:10,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:10,084 INFO L229 MonitoredProcess]: Starting monitored process 240 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:44:10,085 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Waiting until timeout for monitored process [2024-09-12 21:44:10,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-09-12 21:44:10,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:10,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:44:10,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 650 proven. 111 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:11,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 650 proven. 111 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:11,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933510075] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:11,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:11,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 84 [2024-09-12 21:44:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833867642] [2024-09-12 21:44:11,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:11,901 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-12 21:44:11,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:11,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-12 21:44:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=5787, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 21:44:11,903 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 84 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 84 states have internal predecessors, (139), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:19,234 INFO L93 Difference]: Finished difference Result 473 states and 538 transitions. [2024-09-12 21:44:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:44:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 84 states have internal predecessors, (139), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:44:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:19,240 INFO L225 Difference]: With dead ends: 473 [2024-09-12 21:44:19,240 INFO L226 Difference]: Without dead ends: 402 [2024-09-12 21:44:19,241 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 316 SyntacticMatches, 42 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1193, Invalid=5947, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 21:44:19,241 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:19,242 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 585 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:44:19,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-09-12 21:44:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 220. [2024-09-12 21:44:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:44:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:44:20,295 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:44:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:20,295 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:44:20,296 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 84 states have internal predecessors, (139), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:20,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:44:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:44:20,296 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:20,296 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:20,309 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Forceful destruction successful, exit code 0 [2024-09-12 21:44:20,497 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239,240 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:20,497 INFO L399 AbstractCegarLoop]: === Iteration 241 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:20,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash 39532150, now seen corresponding path program 181 times [2024-09-12 21:44:20,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:20,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599818879] [2024-09-12 21:44:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:44:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:44:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:44:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:44:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:44:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:44:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:44:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:44:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:44:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:44:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:44:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:44:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:44:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:44:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:44:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:44:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:44:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:44:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:44:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:44:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 592 proven. 168 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599818879] [2024-09-12 21:44:21,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599818879] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177652852] [2024-09-12 21:44:21,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:44:21,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:21,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:21,233 INFO L229 MonitoredProcess]: Starting monitored process 241 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:44:21,234 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Waiting until timeout for monitored process [2024-09-12 21:44:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:21,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:44:21,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 650 proven. 110 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:22,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 650 proven. 110 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:23,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177652852] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:23,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:23,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 83 [2024-09-12 21:44:23,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584430710] [2024-09-12 21:44:23,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:23,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-12 21:44:23,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:23,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-12 21:44:23,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=5649, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:44:23,012 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 83 states, 83 states have (on average 1.6626506024096386) internal successors, (138), 83 states have internal predecessors, (138), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:30,430 INFO L93 Difference]: Finished difference Result 474 states and 539 transitions. [2024-09-12 21:44:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:44:30,431 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.6626506024096386) internal successors, (138), 83 states have internal predecessors, (138), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:44:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:30,434 INFO L225 Difference]: With dead ends: 474 [2024-09-12 21:44:30,434 INFO L226 Difference]: Without dead ends: 403 [2024-09-12 21:44:30,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 317 SyntacticMatches, 42 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5226 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1165, Invalid=5807, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 21:44:30,435 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:30,435 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 721 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:44:30,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-12 21:44:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 220. [2024-09-12 21:44:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:44:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:44:31,465 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:44:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:31,465 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:44:31,465 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.6626506024096386) internal successors, (138), 83 states have internal predecessors, (138), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:31,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:44:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:44:31,466 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:31,466 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 11, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:31,478 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Forceful destruction successful, exit code 0 [2024-09-12 21:44:31,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,241 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:31,666 INFO L399 AbstractCegarLoop]: === Iteration 242 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:31,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:31,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1445906613, now seen corresponding path program 182 times [2024-09-12 21:44:31,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:31,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261693570] [2024-09-12 21:44:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:31,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:44:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:44:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:44:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:44:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:44:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:44:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:44:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:44:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:44:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:44:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:44:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:44:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:44:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:44:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:44:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:44:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:44:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:44:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:44:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:44:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 592 proven. 169 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:32,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261693570] [2024-09-12 21:44:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261693570] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:32,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288160211] [2024-09-12 21:44:32,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:44:32,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:32,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:32,391 INFO L229 MonitoredProcess]: Starting monitored process 242 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:44:32,392 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Waiting until timeout for monitored process [2024-09-12 21:44:32,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:44:32,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:32,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:44:32,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 650 proven. 111 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:33,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 650 proven. 111 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:34,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288160211] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:34,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:34,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 82 [2024-09-12 21:44:34,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238128716] [2024-09-12 21:44:34,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:34,143 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-12 21:44:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:34,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-12 21:44:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=5509, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:44:34,144 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 82 states, 82 states have (on average 1.670731707317073) internal successors, (137), 82 states have internal predecessors, (137), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:41,414 INFO L93 Difference]: Finished difference Result 473 states and 538 transitions. [2024-09-12 21:44:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:44:41,414 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.670731707317073) internal successors, (137), 82 states have internal predecessors, (137), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:44:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:41,418 INFO L225 Difference]: With dead ends: 473 [2024-09-12 21:44:41,418 INFO L226 Difference]: Without dead ends: 402 [2024-09-12 21:44:41,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 318 SyntacticMatches, 42 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5021 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1141, Invalid=5665, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:44:41,419 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:41,419 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 326 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:44:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-09-12 21:44:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 220. [2024-09-12 21:44:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:44:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:44:42,456 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:44:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:42,456 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:44:42,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.670731707317073) internal successors, (137), 82 states have internal predecessors, (137), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:42,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:44:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:44:42,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:42,457 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 12, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:42,469 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Ended with exit code 0 [2024-09-12 21:44:42,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable241 [2024-09-12 21:44:42,658 INFO L399 AbstractCegarLoop]: === Iteration 243 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:42,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash 244347542, now seen corresponding path program 183 times [2024-09-12 21:44:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:42,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365135156] [2024-09-12 21:44:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:44:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:44:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:44:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:44:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:44:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:44:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:44:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:44:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:44:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:44:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:44:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:44:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:44:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:44:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:44:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:44:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:44:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:44:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:44:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:44:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 592 proven. 172 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365135156] [2024-09-12 21:44:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365135156] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798801247] [2024-09-12 21:44:43,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:44:43,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:43,391 INFO L229 MonitoredProcess]: Starting monitored process 243 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:44:43,391 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Waiting until timeout for monitored process [2024-09-12 21:44:43,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-12 21:44:43,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:43,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:44:43,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 650 proven. 114 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:44,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 650 proven. 114 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:44:45,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798801247] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:45,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:45,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 81 [2024-09-12 21:44:45,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782125149] [2024-09-12 21:44:45,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:45,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-09-12 21:44:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-09-12 21:44:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1113, Invalid=5367, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 21:44:45,142 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 81 states, 81 states have (on average 1.6790123456790123) internal successors, (136), 81 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:52,409 INFO L93 Difference]: Finished difference Result 470 states and 535 transitions. [2024-09-12 21:44:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:44:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.6790123456790123) internal successors, (136), 81 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 176 [2024-09-12 21:44:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:52,413 INFO L225 Difference]: With dead ends: 470 [2024-09-12 21:44:52,413 INFO L226 Difference]: Without dead ends: 399 [2024-09-12 21:44:52,413 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 319 SyntacticMatches, 42 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4819 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1121, Invalid=5521, Unknown=0, NotChecked=0, Total=6642 [2024-09-12 21:44:52,414 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:52,414 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 557 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:44:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-09-12 21:44:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 220. [2024-09-12 21:44:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 174 states have (on average 1.132183908045977) internal successors, (197), 175 states have internal predecessors, (197), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:44:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-09-12 21:44:53,442 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 176 [2024-09-12 21:44:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:53,442 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-09-12 21:44:53,442 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.6790123456790123) internal successors, (136), 81 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:44:53,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-09-12 21:44:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-12 21:44:53,443 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:53,443 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 13, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:53,455 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Ended with exit code 0 Killed by 15