./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 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/fragtest_simple.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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:16:01,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:16:01,557 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:16:01,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:16:01,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:16:01,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:16:01,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:16:01,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:16:01,595 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:16:01,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:16:01,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:16:01,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:16:01,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:16:01,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:16:01,599 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:16:01,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:16:01,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:16:01,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:16:01,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:16:01,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:16:01,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:16:01,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:16:01,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:16:01,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:16:01,604 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:16:01,605 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:16:01,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:16:01,605 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:16:01,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:16:01,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:16:01,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:16:01,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:16:01,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:16:01,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:16:01,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:16:01,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:16:01,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:16:01,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:16:01,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:16:01,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:16:01,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:16:01,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:16:01,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:16:01,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:16:01,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:16:01,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:16:01,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:16:01,896 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:16:01,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-17 18:16:03,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:16:03,697 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:16:03,698 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-17 18:16:03,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/923114850/2140ab062a354cd8a73b6f547ea6837b/FLAG9cf1a1e9e [2024-09-17 18:16:04,086 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/923114850/2140ab062a354cd8a73b6f547ea6837b [2024-09-17 18:16:04,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:16:04,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:16:04,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:16:04,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:16:04,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:16:04,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365af1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04, skipping insertion in model container [2024-09-17 18:16:04,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,122 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:16:04,276 WARN L248 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/fragtest_simple.i[893,906] [2024-09-17 18:16:04,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:16:04,299 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:16:04,315 WARN L248 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/fragtest_simple.i[893,906] [2024-09-17 18:16:04,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:16:04,335 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:16:04,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04 WrapperNode [2024-09-17 18:16:04,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:16:04,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:16:04,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:16:04,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:16:04,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,356 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:16:04,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:16:04,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:16:04,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:16:04,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:16:04,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,379 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]. [2024-09-17 18:16:04,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:16:04,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:16:04,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:16:04,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:16:04,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (1/1) ... [2024-09-17 18:16:04,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:16:04,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:04,424 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) [2024-09-17 18:16:04,427 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 [2024-09-17 18:16:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:16:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:16:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:16:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:16:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:16:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:16:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:16:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:16:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:16:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:16:04,537 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:16:04,540 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:16:04,733 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-17 18:16:04,733 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:16:04,762 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:16:04,764 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-17 18:16:04,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:16:04 BoogieIcfgContainer [2024-09-17 18:16:04,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:16:04,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:16:04,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:16:04,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:16:04,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:16:04" (1/3) ... [2024-09-17 18:16:04,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1266d721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:16:04, skipping insertion in model container [2024-09-17 18:16:04,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:16:04" (2/3) ... [2024-09-17 18:16:04,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1266d721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:16:04, skipping insertion in model container [2024-09-17 18:16:04,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:16:04" (3/3) ... [2024-09-17 18:16:04,775 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-09-17 18:16:04,794 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:16:04,794 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:16:04,862 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:16:04,873 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;@63ac3279, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:16:04,873 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:16:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2024-09-17 18:16:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-17 18:16:04,886 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:04,886 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:04,887 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:04,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1876965751, now seen corresponding path program 1 times [2024-09-17 18:16:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655754424] [2024-09-17 18:16:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:04,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:05,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:16:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:05,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655754424] [2024-09-17 18:16:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655754424] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:16:05,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:16:05,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:16:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135402470] [2024-09-17 18:16:05,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:16:05,101 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:16:05,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:05,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:16:05,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:16:05,154 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-09-17 18:16:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:05,179 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2024-09-17 18:16:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:16:05,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 15 [2024-09-17 18:16:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:05,188 INFO L225 Difference]: With dead ends: 45 [2024-09-17 18:16:05,188 INFO L226 Difference]: Without dead ends: 22 [2024-09-17 18:16:05,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:16:05,194 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:05,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:16:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-17 18:16:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-17 18:16:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2024-09-17 18:16:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-09-17 18:16:05,226 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2024-09-17 18:16:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:05,227 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-09-17 18:16:05,227 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-09-17 18:16:05,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:05,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-09-17 18:16:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-17 18:16:05,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:05,229 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:05,229 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:16:05,229 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:05,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1705971875, now seen corresponding path program 1 times [2024-09-17 18:16:05,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:05,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013097044] [2024-09-17 18:16:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:05,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:16:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:05,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013097044] [2024-09-17 18:16:05,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013097044] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:16:05,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:16:05,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:16:05,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426642754] [2024-09-17 18:16:05,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:16:05,482 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:16:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:16:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:16:05,483 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2024-09-17 18:16:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:05,580 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-09-17 18:16:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:16:05,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 [2024-09-17 18:16:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:05,582 INFO L225 Difference]: With dead ends: 31 [2024-09-17 18:16:05,600 INFO L226 Difference]: Without dead ends: 29 [2024-09-17 18:16:05,601 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:16:05,602 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:05,603 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:16:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-17 18:16:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-09-17 18:16:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 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) [2024-09-17 18:16:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-09-17 18:16:05,619 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2024-09-17 18:16:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:05,620 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-09-17 18:16:05,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2024-09-17 18:16:05,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-09-17 18:16:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-17 18:16:05,621 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:05,622 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, 1] [2024-09-17 18:16:05,622 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 18:16:05,622 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:05,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1806984300, now seen corresponding path program 1 times [2024-09-17 18:16:05,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:05,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760660347] [2024-09-17 18:16:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:05,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:05,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:05,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 18:16:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:16:05,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:05,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760660347] [2024-09-17 18:16:05,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760660347] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:16:05,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:16:05,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:16:05,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7396182] [2024-09-17 18:16:05,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:16:05,837 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:16:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:05,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:16:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:16:05,840 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 18:16:05,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:05,936 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-09-17 18:16:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:16:05,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-09-17 18:16:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:05,940 INFO L225 Difference]: With dead ends: 48 [2024-09-17 18:16:05,941 INFO L226 Difference]: Without dead ends: 33 [2024-09-17 18:16:05,942 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:16:05,944 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:05,945 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-17 18:16:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-09-17 18:16:05,955 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) [2024-09-17 18:16:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-17 18:16:05,957 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2024-09-17 18:16:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:05,957 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-17 18:16:05,957 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 18:16:05,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-17 18:16:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-17 18:16:05,958 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:05,959 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, 1, 1] [2024-09-17 18:16:05,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-17 18:16:05,959 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:05,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2085758041, now seen corresponding path program 1 times [2024-09-17 18:16:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:05,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761330119] [2024-09-17 18:16:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:05,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-17 18:16:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:16:06,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:06,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761330119] [2024-09-17 18:16:06,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761330119] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:06,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530100015] [2024-09-17 18:16:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:06,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:06,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:06,072 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) [2024-09-17 18:16:06,085 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:16:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-17 18:16:06,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:16:06,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:16:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530100015] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:06,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:06,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-09-17 18:16:06,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184715203] [2024-09-17 18:16:06,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:06,387 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 18:16:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 18:16:06,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:16:06,389 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 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) [2024-09-17 18:16:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:06,576 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-09-17 18:16:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 18:16:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 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 27 [2024-09-17 18:16:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:06,578 INFO L225 Difference]: With dead ends: 62 [2024-09-17 18:16:06,578 INFO L226 Difference]: Without dead ends: 47 [2024-09-17 18:16:06,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:16:06,580 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:06,580 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-17 18:16:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-17 18:16:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 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) [2024-09-17 18:16:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-09-17 18:16:06,589 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 27 [2024-09-17 18:16:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:06,589 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-09-17 18:16:06,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 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) [2024-09-17 18:16:06,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-09-17 18:16:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-17 18:16:06,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:06,591 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:06,610 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 18:16:06,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:06,794 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:06,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash 5025743, now seen corresponding path program 2 times [2024-09-17 18:16:06,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:06,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286274675] [2024-09-17 18:16:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 18:16:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-17 18:16:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:16:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286274675] [2024-09-17 18:16:06,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286274675] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749066798] [2024-09-17 18:16:06,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:16:06,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:06,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:06,908 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) [2024-09-17 18:16:06,910 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:16:06,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:16:06,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:06,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-17 18:16:06,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:16:07,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:16:07,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749066798] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:07,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:07,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-17 18:16:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019194533] [2024-09-17 18:16:07,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:07,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 18:16:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:07,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 18:16:07,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:16:07,172 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 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) [2024-09-17 18:16:07,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:07,352 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-09-17 18:16:07,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 18:16:07,353 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 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 37 [2024-09-17 18:16:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:07,354 INFO L225 Difference]: With dead ends: 79 [2024-09-17 18:16:07,354 INFO L226 Difference]: Without dead ends: 60 [2024-09-17 18:16:07,355 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-09-17 18:16:07,355 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:07,356 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 124 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-17 18:16:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-09-17 18:16:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 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) [2024-09-17 18:16:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-09-17 18:16:07,365 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 37 [2024-09-17 18:16:07,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:07,365 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-09-17 18:16:07,365 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 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) [2024-09-17 18:16:07,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-09-17 18:16:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-17 18:16:07,367 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:07,367 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:07,383 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:07,571 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:07,572 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:07,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash -607862011, now seen corresponding path program 3 times [2024-09-17 18:16:07,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:07,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847003528] [2024-09-17 18:16:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:07,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:07,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:07,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-17 18:16:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:07,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:16:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:07,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-17 18:16:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 18:16:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847003528] [2024-09-17 18:16:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847003528] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791091537] [2024-09-17 18:16:07,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:16:07,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:07,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:07,731 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) [2024-09-17 18:16:07,738 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:16:07,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-17 18:16:07,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:07,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-17 18:16:07,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 18:16:07,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 18:16:08,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791091537] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:08,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2024-09-17 18:16:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89786571] [2024-09-17 18:16:08,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:08,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 18:16:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 18:16:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:16:08,104 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 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) [2024-09-17 18:16:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:08,338 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-09-17 18:16:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-17 18:16:08,340 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 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 47 [2024-09-17 18:16:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:08,341 INFO L225 Difference]: With dead ends: 96 [2024-09-17 18:16:08,341 INFO L226 Difference]: Without dead ends: 73 [2024-09-17 18:16:08,342 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-09-17 18:16:08,343 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:08,343 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 143 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-17 18:16:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2024-09-17 18:16:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 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) [2024-09-17 18:16:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-09-17 18:16:08,356 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 47 [2024-09-17 18:16:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:08,357 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-09-17 18:16:08,357 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 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) [2024-09-17 18:16:08,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:08,358 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-09-17 18:16:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-17 18:16:08,359 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:08,359 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:08,379 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:08,563 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 18:16:08,564 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:08,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash -674468357, now seen corresponding path program 4 times [2024-09-17 18:16:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129916480] [2024-09-17 18:16:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:08,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:08,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:16:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:08,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 18:16:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:08,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 18:16:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:08,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:16:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:16:08,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129916480] [2024-09-17 18:16:08,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129916480] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037361907] [2024-09-17 18:16:08,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:16:08,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:08,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:08,819 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) [2024-09-17 18:16:08,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:16:08,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:16:08,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:08,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 18:16:08,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:16:09,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:16:09,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037361907] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:09,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:09,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-09-17 18:16:09,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080546370] [2024-09-17 18:16:09,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:09,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-17 18:16:09,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:09,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-17 18:16:09,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:16:09,180 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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) [2024-09-17 18:16:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:09,356 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2024-09-17 18:16:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 18:16:09,357 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 57 [2024-09-17 18:16:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:09,358 INFO L225 Difference]: With dead ends: 104 [2024-09-17 18:16:09,358 INFO L226 Difference]: Without dead ends: 77 [2024-09-17 18:16:09,359 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-09-17 18:16:09,359 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:09,360 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 139 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-17 18:16:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2024-09-17 18:16:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 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) [2024-09-17 18:16:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-09-17 18:16:09,383 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 57 [2024-09-17 18:16:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:09,384 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-09-17 18:16:09,385 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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) [2024-09-17 18:16:09,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-09-17 18:16:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-17 18:16:09,389 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:09,389 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:09,408 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 18:16:09,589 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:09,590 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:09,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1699306816, now seen corresponding path program 5 times [2024-09-17 18:16:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:09,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145509416] [2024-09-17 18:16:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:09,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:09,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 18:16:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:09,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:16:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:09,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 18:16:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:09,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-17 18:16:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:16:09,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145509416] [2024-09-17 18:16:09,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145509416] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597257947] [2024-09-17 18:16:09,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:16:09,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:09,818 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) [2024-09-17 18:16:09,823 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:16:09,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-17 18:16:09,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:09,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 18:16:09,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:16:09,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:16:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597257947] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:10,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:10,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-09-17 18:16:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357016644] [2024-09-17 18:16:10,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:10,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-17 18:16:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-17 18:16:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-17 18:16:10,109 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 18:16:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:10,178 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2024-09-17 18:16:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 18:16:10,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 59 [2024-09-17 18:16:10,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:10,180 INFO L225 Difference]: With dead ends: 81 [2024-09-17 18:16:10,180 INFO L226 Difference]: Without dead ends: 79 [2024-09-17 18:16:10,181 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:16:10,181 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:10,181 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 129 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:16:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-17 18:16:10,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-09-17 18:16:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 18:16:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2024-09-17 18:16:10,202 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 59 [2024-09-17 18:16:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:10,203 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2024-09-17 18:16:10,203 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 18:16:10,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:10,203 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2024-09-17 18:16:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-17 18:16:10,204 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:10,205 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:10,226 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:10,405 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-17 18:16:10,405 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:10,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash 705453474, now seen corresponding path program 6 times [2024-09-17 18:16:10,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:10,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442782067] [2024-09-17 18:16:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:10,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 18:16:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:16:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 18:16:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-17 18:16:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:16:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:16:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 69 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:16:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442782067] [2024-09-17 18:16:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442782067] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893874874] [2024-09-17 18:16:10,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:16:10,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:10,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:10,627 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) [2024-09-17 18:16:10,630 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:16:10,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-17 18:16:10,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:10,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-17 18:16:10,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:16:10,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:16:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893874874] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:11,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:11,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2024-09-17 18:16:11,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710910626] [2024-09-17 18:16:11,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:11,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-17 18:16:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-17 18:16:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-09-17 18:16:11,089 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-17 18:16:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:11,402 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2024-09-17 18:16:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-17 18:16:11,404 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 75 [2024-09-17 18:16:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:11,405 INFO L225 Difference]: With dead ends: 161 [2024-09-17 18:16:11,408 INFO L226 Difference]: Without dead ends: 99 [2024-09-17 18:16:11,409 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2024-09-17 18:16:11,410 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:11,410 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 219 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:16:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-17 18:16:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2024-09-17 18:16:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 62 states have internal predecessors, (65), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 18:16:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-09-17 18:16:11,430 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 75 [2024-09-17 18:16:11,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:11,430 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-09-17 18:16:11,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-17 18:16:11,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-09-17 18:16:11,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-17 18:16:11,434 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:11,434 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:11,454 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:11,635 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:11,636 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:11,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1813255316, now seen corresponding path program 7 times [2024-09-17 18:16:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763425162] [2024-09-17 18:16:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:16:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-17 18:16:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-17 18:16:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:16:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:16:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:16:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 54 proven. 86 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:16:11,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:11,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763425162] [2024-09-17 18:16:11,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763425162] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935944567] [2024-09-17 18:16:11,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:16:11,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:11,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:11,891 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) [2024-09-17 18:16:11,893 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 18:16:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:11,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-17 18:16:11,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:16:12,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:16:12,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935944567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:12,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:12,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 16 [2024-09-17 18:16:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136379919] [2024-09-17 18:16:12,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:12,232 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 18:16:12,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 18:16:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:16:12,233 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 18:16:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:12,320 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-09-17 18:16:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-17 18:16:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 79 [2024-09-17 18:16:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:12,321 INFO L225 Difference]: With dead ends: 97 [2024-09-17 18:16:12,321 INFO L226 Difference]: Without dead ends: 95 [2024-09-17 18:16:12,322 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-09-17 18:16:12,322 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:12,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 194 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-17 18:16:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-09-17 18:16:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 71 states have internal predecessors, (74), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 18:16:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2024-09-17 18:16:12,332 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 79 [2024-09-17 18:16:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:12,332 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2024-09-17 18:16:12,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 18:16:12,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2024-09-17 18:16:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-17 18:16:12,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:12,333 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:12,349 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:12,534 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:12,534 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:12,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash 299028046, now seen corresponding path program 8 times [2024-09-17 18:16:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597666222] [2024-09-17 18:16:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:12,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:16:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-17 18:16:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-17 18:16:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:16:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:16:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:16:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:16:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:16:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-17 18:16:12,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597666222] [2024-09-17 18:16:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597666222] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720868235] [2024-09-17 18:16:12,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:16:12,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:12,897 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) [2024-09-17 18:16:12,901 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 18:16:12,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:16:12,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:12,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-17 18:16:12,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 56 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-09-17 18:16:13,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 142 proven. 56 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-17 18:16:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720868235] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:13,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:13,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 29 [2024-09-17 18:16:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113357925] [2024-09-17 18:16:13,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:13,472 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-17 18:16:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-17 18:16:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-09-17 18:16:13,474 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2024-09-17 18:16:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:13,718 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2024-09-17 18:16:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-17 18:16:13,719 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 95 [2024-09-17 18:16:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:13,720 INFO L225 Difference]: With dead ends: 161 [2024-09-17 18:16:13,720 INFO L226 Difference]: Without dead ends: 116 [2024-09-17 18:16:13,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 185 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2024-09-17 18:16:13,722 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:13,723 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 210 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-17 18:16:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 92. [2024-09-17 18:16:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 73 states have internal predecessors, (76), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 18:16:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2024-09-17 18:16:13,736 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 95 [2024-09-17 18:16:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:13,736 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2024-09-17 18:16:13,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2024-09-17 18:16:13,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:13,737 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2024-09-17 18:16:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-17 18:16:13,741 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:13,741 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:13,759 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-17 18:16:13,941 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:13,942 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:13,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:13,943 INFO L85 PathProgramCache]: Analyzing trace with hash 892618579, now seen corresponding path program 9 times [2024-09-17 18:16:13,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:13,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263345099] [2024-09-17 18:16:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 18:16:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 18:16:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:16:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-17 18:16:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-17 18:16:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-17 18:16:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:16:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:16:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-17 18:16:14,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263345099] [2024-09-17 18:16:14,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263345099] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:14,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342420988] [2024-09-17 18:16:14,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:16:14,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:14,323 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) [2024-09-17 18:16:14,324 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 18:16:14,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-17 18:16:14,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:14,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-17 18:16:14,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-17 18:16:14,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-17 18:16:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342420988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:14,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 31 [2024-09-17 18:16:14,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35108828] [2024-09-17 18:16:14,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:14,989 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-17 18:16:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-17 18:16:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-17 18:16:14,992 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 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) [2024-09-17 18:16:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:15,500 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions. [2024-09-17 18:16:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-17 18:16:15,501 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 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 97 [2024-09-17 18:16:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:15,503 INFO L225 Difference]: With dead ends: 173 [2024-09-17 18:16:15,503 INFO L226 Difference]: Without dead ends: 130 [2024-09-17 18:16:15,504 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 192 SyntacticMatches, 19 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=599, Invalid=2707, Unknown=0, NotChecked=0, Total=3306 [2024-09-17 18:16:15,505 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 93 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:15,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 308 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:16:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-17 18:16:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2024-09-17 18:16:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.05) internal successors, (84), 81 states have internal predecessors, (84), 12 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-17 18:16:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-09-17 18:16:15,561 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 97 [2024-09-17 18:16:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:15,561 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-09-17 18:16:15,562 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 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) [2024-09-17 18:16:15,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:15,564 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-09-17 18:16:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-17 18:16:15,565 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:15,565 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:15,583 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-17 18:16:15,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-17 18:16:15,766 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:15,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:15,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1940072183, now seen corresponding path program 10 times [2024-09-17 18:16:15,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:15,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004997247] [2024-09-17 18:16:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:16:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 18:16:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-17 18:16:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:16:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:16:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:16:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:16:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:16:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:16:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 156 proven. 114 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-17 18:16:16,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004997247] [2024-09-17 18:16:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004997247] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640067878] [2024-09-17 18:16:16,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:16:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:16,195 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) [2024-09-17 18:16:16,207 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-17 18:16:16,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:16:16,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:16,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-17 18:16:16,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-17 18:16:16,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-17 18:16:16,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640067878] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:16,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:16,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 34 [2024-09-17 18:16:16,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187596548] [2024-09-17 18:16:16,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:16,942 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-17 18:16:16,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:16,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-17 18:16:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-09-17 18:16:16,943 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 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) [2024-09-17 18:16:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:17,505 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2024-09-17 18:16:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-17 18:16:17,505 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 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 107 [2024-09-17 18:16:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:17,507 INFO L225 Difference]: With dead ends: 190 [2024-09-17 18:16:17,507 INFO L226 Difference]: Without dead ends: 143 [2024-09-17 18:16:17,509 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 212 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=725, Invalid=3307, Unknown=0, NotChecked=0, Total=4032 [2024-09-17 18:16:17,510 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 99 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:17,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 391 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:16:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-17 18:16:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 112. [2024-09-17 18:16:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 89 states have internal predecessors, (92), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:16:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2024-09-17 18:16:17,527 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 107 [2024-09-17 18:16:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:17,528 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2024-09-17 18:16:17,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 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) [2024-09-17 18:16:17,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2024-09-17 18:16:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-17 18:16:17,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:17,529 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:17,546 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:17,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-17 18:16:17,735 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:17,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2078106239, now seen corresponding path program 11 times [2024-09-17 18:16:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940461504] [2024-09-17 18:16:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 18:16:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-17 18:16:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-17 18:16:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-17 18:16:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:16:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 18:16:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 18:16:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:16:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:16:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:16:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 193 proven. 137 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-17 18:16:18,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:18,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940461504] [2024-09-17 18:16:18,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940461504] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:18,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277569017] [2024-09-17 18:16:18,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:16:18,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:18,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:18,186 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) [2024-09-17 18:16:18,188 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-17 18:16:18,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-17 18:16:18,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:18,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-17 18:16:18,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-17 18:16:18,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-17 18:16:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277569017] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:18,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2024-09-17 18:16:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446574617] [2024-09-17 18:16:18,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:18,925 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-17 18:16:18,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-17 18:16:18,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2024-09-17 18:16:18,927 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 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) [2024-09-17 18:16:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:19,243 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2024-09-17 18:16:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-17 18:16:19,243 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 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 117 [2024-09-17 18:16:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:19,245 INFO L225 Difference]: With dead ends: 198 [2024-09-17 18:16:19,245 INFO L226 Difference]: Without dead ends: 147 [2024-09-17 18:16:19,246 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 224 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=581, Invalid=1675, Unknown=0, NotChecked=0, Total=2256 [2024-09-17 18:16:19,247 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 76 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:19,247 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 281 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:16:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-17 18:16:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2024-09-17 18:16:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 91 states have internal predecessors, (94), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:16:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2024-09-17 18:16:19,289 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 117 [2024-09-17 18:16:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:19,290 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2024-09-17 18:16:19,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 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) [2024-09-17 18:16:19,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2024-09-17 18:16:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-17 18:16:19,291 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:19,291 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:19,310 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-17 18:16:19,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-17 18:16:19,496 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:19,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1424366020, now seen corresponding path program 12 times [2024-09-17 18:16:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:19,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334421516] [2024-09-17 18:16:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:19,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-17 18:16:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-17 18:16:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:16:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:16:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:16:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:16:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:16:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:16:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:16:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:16:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-17 18:16:19,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:19,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334421516] [2024-09-17 18:16:19,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334421516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:19,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002034314] [2024-09-17 18:16:19,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:16:19,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:19,833 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) [2024-09-17 18:16:19,834 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-17 18:16:19,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-17 18:16:19,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:19,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-17 18:16:19,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-17 18:16:20,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-17 18:16:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002034314] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:20,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-09-17 18:16:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656105554] [2024-09-17 18:16:20,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:20,301 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-17 18:16:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-17 18:16:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2024-09-17 18:16:20,302 INFO L87 Difference]: Start difference. First operand 114 states and 119 transitions. Second operand has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:16:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:20,402 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2024-09-17 18:16:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-17 18:16:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 119 [2024-09-17 18:16:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:20,404 INFO L225 Difference]: With dead ends: 133 [2024-09-17 18:16:20,404 INFO L226 Difference]: Without dead ends: 131 [2024-09-17 18:16:20,404 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 244 SyntacticMatches, 23 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2024-09-17 18:16:20,405 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:20,405 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 188 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-17 18:16:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-09-17 18:16:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 100 states have internal predecessors, (103), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 18:16:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2024-09-17 18:16:20,419 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 119 [2024-09-17 18:16:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:20,419 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2024-09-17 18:16:20,420 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:16:20,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2024-09-17 18:16:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-17 18:16:20,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:20,421 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:20,438 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-17 18:16:20,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-17 18:16:20,626 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:20,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash -552252250, now seen corresponding path program 13 times [2024-09-17 18:16:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:20,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106596031] [2024-09-17 18:16:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-17 18:16:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-17 18:16:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:16:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:16:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:16:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:16:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:16:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:16:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:16:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:16:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:16:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:16:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-17 18:16:21,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106596031] [2024-09-17 18:16:21,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106596031] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448412416] [2024-09-17 18:16:21,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:16:21,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:21,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:21,151 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) [2024-09-17 18:16:21,152 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-17 18:16:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:21,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-17 18:16:21,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-09-17 18:16:21,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-09-17 18:16:21,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448412416] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:21,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:21,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2024-09-17 18:16:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75968159] [2024-09-17 18:16:21,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:21,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-17 18:16:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-17 18:16:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2024-09-17 18:16:21,923 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2024-09-17 18:16:22,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:22,263 INFO L93 Difference]: Finished difference Result 225 states and 267 transitions. [2024-09-17 18:16:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-17 18:16:22,263 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 135 [2024-09-17 18:16:22,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:22,265 INFO L225 Difference]: With dead ends: 225 [2024-09-17 18:16:22,265 INFO L226 Difference]: Without dead ends: 164 [2024-09-17 18:16:22,266 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 261 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2024-09-17 18:16:22,267 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 70 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:22,267 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 375 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:16:22,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-17 18:16:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 128. [2024-09-17 18:16:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 102 states have internal predecessors, (105), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 18:16:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2024-09-17 18:16:22,278 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 135 [2024-09-17 18:16:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:22,278 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2024-09-17 18:16:22,279 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2024-09-17 18:16:22,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2024-09-17 18:16:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-17 18:16:22,282 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:22,282 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:22,301 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-17 18:16:22,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-17 18:16:22,487 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:22,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1058366293, now seen corresponding path program 14 times [2024-09-17 18:16:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:22,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808431836] [2024-09-17 18:16:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 18:16:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:16:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-17 18:16:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-17 18:16:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-17 18:16:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:16:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:16:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:16:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:16:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:16:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:16:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:16:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-17 18:16:22,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:22,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808431836] [2024-09-17 18:16:22,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808431836] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:22,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301872423] [2024-09-17 18:16:22,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:16:22,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:22,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:22,995 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) [2024-09-17 18:16:23,004 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-17 18:16:23,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:16:23,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:23,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-17 18:16:23,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-17 18:16:23,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-17 18:16:23,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301872423] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:23,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:23,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 17, 17] total 43 [2024-09-17 18:16:23,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917886663] [2024-09-17 18:16:23,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:23,874 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-17 18:16:23,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-17 18:16:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2024-09-17 18:16:23,876 INFO L87 Difference]: Start difference. First operand 128 states and 134 transitions. Second operand has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:16:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:24,620 INFO L93 Difference]: Finished difference Result 237 states and 283 transitions. [2024-09-17 18:16:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-17 18:16:24,621 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 137 [2024-09-17 18:16:24,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:24,623 INFO L225 Difference]: With dead ends: 237 [2024-09-17 18:16:24,623 INFO L226 Difference]: Without dead ends: 178 [2024-09-17 18:16:24,625 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 272 SyntacticMatches, 27 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2024-09-17 18:16:24,625 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 187 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:24,626 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 583 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:16:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-17 18:16:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 138. [2024-09-17 18:16:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 109 states have (on average 1.036697247706422) internal successors, (113), 110 states have internal predecessors, (113), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-17 18:16:24,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2024-09-17 18:16:24,637 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 137 [2024-09-17 18:16:24,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:24,637 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 144 transitions. [2024-09-17 18:16:24,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:16:24,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 144 transitions. [2024-09-17 18:16:24,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-09-17 18:16:24,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:24,639 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:24,655 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:24,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-17 18:16:24,839 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:24,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1330081121, now seen corresponding path program 15 times [2024-09-17 18:16:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090959811] [2024-09-17 18:16:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:24,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 18:16:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-17 18:16:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:16:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:16:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:16:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:16:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:16:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:16:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:16:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:16:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:16:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:16:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:16:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-17 18:16:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:25,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090959811] [2024-09-17 18:16:25,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090959811] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:25,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301447456] [2024-09-17 18:16:25,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:16:25,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:25,445 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) [2024-09-17 18:16:25,447 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-17 18:16:25,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-17 18:16:25,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:25,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-17 18:16:25,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-17 18:16:25,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-17 18:16:26,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301447456] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:26,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:26,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 46 [2024-09-17 18:16:26,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649974508] [2024-09-17 18:16:26,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:26,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-17 18:16:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-17 18:16:26,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2024-09-17 18:16:26,525 INFO L87 Difference]: Start difference. First operand 138 states and 144 transitions. Second operand has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-17 18:16:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:27,467 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2024-09-17 18:16:27,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-17 18:16:27,469 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 147 [2024-09-17 18:16:27,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:27,470 INFO L225 Difference]: With dead ends: 254 [2024-09-17 18:16:27,470 INFO L226 Difference]: Without dead ends: 191 [2024-09-17 18:16:27,472 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 292 SyntacticMatches, 29 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1349, Invalid=6307, Unknown=0, NotChecked=0, Total=7656 [2024-09-17 18:16:27,474 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 163 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:27,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 630 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:16:27,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-17 18:16:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2024-09-17 18:16:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 118 states have internal predecessors, (121), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:16:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 154 transitions. [2024-09-17 18:16:27,490 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 154 transitions. Word has length 147 [2024-09-17 18:16:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:27,490 INFO L474 AbstractCegarLoop]: Abstraction has 148 states and 154 transitions. [2024-09-17 18:16:27,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-17 18:16:27,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 154 transitions. [2024-09-17 18:16:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-17 18:16:27,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:27,492 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:27,509 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-17 18:16:27,692 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-17 18:16:27,693 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:27,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1180928553, now seen corresponding path program 16 times [2024-09-17 18:16:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:27,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156869894] [2024-09-17 18:16:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:27,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-17 18:16:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-17 18:16:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-17 18:16:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:16:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 18:16:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 18:16:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:16:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:16:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:16:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:16:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:16:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:16:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:16:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:16:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-17 18:16:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156869894] [2024-09-17 18:16:28,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156869894] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383733896] [2024-09-17 18:16:28,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:16:28,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:28,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:28,290 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) [2024-09-17 18:16:28,292 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-17 18:16:28,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:16:28,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:28,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-17 18:16:28,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-17 18:16:28,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-17 18:16:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383733896] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:29,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2024-09-17 18:16:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814807502] [2024-09-17 18:16:29,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:29,438 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-17 18:16:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-17 18:16:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2024-09-17 18:16:29,441 INFO L87 Difference]: Start difference. First operand 148 states and 154 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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) [2024-09-17 18:16:29,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:29,880 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2024-09-17 18:16:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-17 18:16:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 157 [2024-09-17 18:16:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:29,884 INFO L225 Difference]: With dead ends: 262 [2024-09-17 18:16:29,884 INFO L226 Difference]: Without dead ends: 195 [2024-09-17 18:16:29,886 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 300 SyntacticMatches, 28 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1029, Invalid=3003, Unknown=0, NotChecked=0, Total=4032 [2024-09-17 18:16:29,888 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:29,888 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 320 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:16:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-17 18:16:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 150. [2024-09-17 18:16:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 120 states have internal predecessors, (123), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:16:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2024-09-17 18:16:29,905 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 157 [2024-09-17 18:16:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:29,905 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2024-09-17 18:16:29,905 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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) [2024-09-17 18:16:29,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2024-09-17 18:16:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-17 18:16:29,908 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:29,908 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:29,924 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-17 18:16:30,108 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:30,109 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:30,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:30,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1351468060, now seen corresponding path program 17 times [2024-09-17 18:16:30,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:30,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401356324] [2024-09-17 18:16:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-17 18:16:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:16:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:16:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:16:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:16:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:16:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:16:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:16:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:16:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:16:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:16:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:16:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:16:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:16:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 238 proven. 422 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-17 18:16:30,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:30,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401356324] [2024-09-17 18:16:30,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401356324] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:30,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467076937] [2024-09-17 18:16:30,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:16:30,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:30,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:30,563 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) [2024-09-17 18:16:30,567 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-17 18:16:30,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-17 18:16:30,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:30,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-17 18:16:30,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-17 18:16:30,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-17 18:16:31,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467076937] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:31,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 24 [2024-09-17 18:16:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397026624] [2024-09-17 18:16:31,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:31,192 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-17 18:16:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-17 18:16:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2024-09-17 18:16:31,193 INFO L87 Difference]: Start difference. First operand 150 states and 156 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:16:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:31,340 INFO L93 Difference]: Finished difference Result 169 states and 177 transitions. [2024-09-17 18:16:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-17 18:16:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 159 [2024-09-17 18:16:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:31,343 INFO L225 Difference]: With dead ends: 169 [2024-09-17 18:16:31,343 INFO L226 Difference]: Without dead ends: 167 [2024-09-17 18:16:31,343 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 328 SyntacticMatches, 31 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2024-09-17 18:16:31,343 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:31,344 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 288 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-17 18:16:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2024-09-17 18:16:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.03125) internal successors, (132), 129 states have internal predecessors, (132), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:16:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 169 transitions. [2024-09-17 18:16:31,359 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 169 transitions. Word has length 159 [2024-09-17 18:16:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:31,360 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 169 transitions. [2024-09-17 18:16:31,361 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:16:31,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 169 transitions. [2024-09-17 18:16:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-09-17 18:16:31,362 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:31,362 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:31,383 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:31,563 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:31,564 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:31,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 881673982, now seen corresponding path program 18 times [2024-09-17 18:16:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:31,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266775465] [2024-09-17 18:16:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:31,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-17 18:16:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:16:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:16:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:16:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:16:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:16:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:16:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:16:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:16:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:16:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:16:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:16:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:16:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:16:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:16:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:16:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 499 proven. 285 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 18:16:32,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266775465] [2024-09-17 18:16:32,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266775465] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252912345] [2024-09-17 18:16:32,222 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:16:32,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:32,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:32,224 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) [2024-09-17 18:16:32,229 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-17 18:16:32,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-17 18:16:32,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:32,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-17 18:16:32,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 18:16:32,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 18:16:33,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252912345] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:33,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:33,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2024-09-17 18:16:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362429873] [2024-09-17 18:16:33,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:33,405 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-17 18:16:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-17 18:16:33,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2024-09-17 18:16:33,408 INFO L87 Difference]: Start difference. First operand 162 states and 169 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-17 18:16:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:34,294 INFO L93 Difference]: Finished difference Result 359 states and 433 transitions. [2024-09-17 18:16:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-17 18:16:34,295 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 175 [2024-09-17 18:16:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:34,297 INFO L225 Difference]: With dead ends: 359 [2024-09-17 18:16:34,297 INFO L226 Difference]: Without dead ends: 217 [2024-09-17 18:16:34,301 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 335 SyntacticMatches, 29 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1930, Invalid=5902, Unknown=0, NotChecked=0, Total=7832 [2024-09-17 18:16:34,302 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 150 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:34,302 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 516 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:16:34,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-17 18:16:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 166. [2024-09-17 18:16:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 132 states have (on average 1.0303030303030303) internal successors, (136), 133 states have internal predecessors, (136), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:16:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 173 transitions. [2024-09-17 18:16:34,329 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 173 transitions. Word has length 175 [2024-09-17 18:16:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:34,329 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 173 transitions. [2024-09-17 18:16:34,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-17 18:16:34,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 173 transitions. [2024-09-17 18:16:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-09-17 18:16:34,332 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:34,332 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:34,352 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-17 18:16:34,533 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-17 18:16:34,534 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:34,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:34,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1584129992, now seen corresponding path program 19 times [2024-09-17 18:16:34,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:34,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291166118] [2024-09-17 18:16:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:34,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-17 18:16:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:16:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:16:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:16:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:16:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:16:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:16:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:16:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:16:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:16:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:16:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:16:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:16:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:16:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:16:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:16:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 304 proven. 546 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 18:16:35,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:35,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291166118] [2024-09-17 18:16:35,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291166118] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:35,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132460139] [2024-09-17 18:16:35,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:16:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:35,080 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) [2024-09-17 18:16:35,088 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-17 18:16:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:35,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-17 18:16:35,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 18:16:35,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 18:16:35,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132460139] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:35,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:35,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 26 [2024-09-17 18:16:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111585507] [2024-09-17 18:16:35,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:35,713 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-17 18:16:35,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:35,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-17 18:16:35,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-09-17 18:16:35,714 INFO L87 Difference]: Start difference. First operand 166 states and 173 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:16:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:35,859 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2024-09-17 18:16:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-17 18:16:35,859 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 179 [2024-09-17 18:16:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:35,861 INFO L225 Difference]: With dead ends: 185 [2024-09-17 18:16:35,861 INFO L226 Difference]: Without dead ends: 183 [2024-09-17 18:16:35,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 370 SyntacticMatches, 35 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2024-09-17 18:16:35,862 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:35,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 332 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-09-17 18:16:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2024-09-17 18:16:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.0283687943262412) internal successors, (145), 142 states have internal predecessors, (145), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-17 18:16:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2024-09-17 18:16:35,878 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 179 [2024-09-17 18:16:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:35,878 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2024-09-17 18:16:35,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:16:35,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2024-09-17 18:16:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-09-17 18:16:35,881 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:35,881 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:35,898 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:36,085 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-17 18:16:36,086 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:36,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:36,086 INFO L85 PathProgramCache]: Analyzing trace with hash 837194410, now seen corresponding path program 20 times [2024-09-17 18:16:36,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:36,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768917212] [2024-09-17 18:16:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-17 18:16:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:16:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:16:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:16:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:16:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:16:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:16:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:16:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:16:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:16:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:16:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:16:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:16:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:16:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:16:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:16:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:16:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:16:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 633 proven. 357 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 18:16:36,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768917212] [2024-09-17 18:16:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768917212] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974088780] [2024-09-17 18:16:36,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:16:36,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:36,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:36,917 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) [2024-09-17 18:16:36,919 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-17 18:16:37,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:16:37,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:37,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-17 18:16:37,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 748 proven. 306 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-09-17 18:16:37,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 682 proven. 306 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2024-09-17 18:16:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974088780] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:38,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 59 [2024-09-17 18:16:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158318107] [2024-09-17 18:16:38,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:38,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-17 18:16:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-17 18:16:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2639, Unknown=0, NotChecked=0, Total=3422 [2024-09-17 18:16:38,335 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2024-09-17 18:16:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:38,896 INFO L93 Difference]: Finished difference Result 319 states and 381 transitions. [2024-09-17 18:16:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-17 18:16:38,896 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) Word has length 195 [2024-09-17 18:16:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:38,898 INFO L225 Difference]: With dead ends: 319 [2024-09-17 18:16:38,899 INFO L226 Difference]: Without dead ends: 234 [2024-09-17 18:16:38,900 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 375 SyntacticMatches, 34 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1469, Invalid=4383, Unknown=0, NotChecked=0, Total=5852 [2024-09-17 18:16:38,900 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 138 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:38,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 481 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:16:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-17 18:16:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 180. [2024-09-17 18:16:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 143 states have (on average 1.027972027972028) internal successors, (147), 144 states have internal predecessors, (147), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-17 18:16:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 188 transitions. [2024-09-17 18:16:38,916 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 188 transitions. Word has length 195 [2024-09-17 18:16:38,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:38,916 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 188 transitions. [2024-09-17 18:16:38,917 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2024-09-17 18:16:38,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:38,917 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 188 transitions. [2024-09-17 18:16:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-17 18:16:38,918 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:38,918 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:38,933 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-17 18:16:39,122 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-17 18:16:39,123 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:39,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2068839121, now seen corresponding path program 21 times [2024-09-17 18:16:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:39,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937894792] [2024-09-17 18:16:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-17 18:16:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-17 18:16:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:16:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 18:16:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 18:16:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:16:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:16:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:16:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:16:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:16:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:16:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:16:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:16:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:16:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:16:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:16:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:16:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:16:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 18:16:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937894792] [2024-09-17 18:16:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937894792] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948788748] [2024-09-17 18:16:39,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:16:39,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:39,948 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) [2024-09-17 18:16:39,952 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-17 18:16:40,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-17 18:16:40,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:40,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-17 18:16:40,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 18:16:40,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 18:16:41,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948788748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:41,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:41,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 23, 23] total 61 [2024-09-17 18:16:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044163588] [2024-09-17 18:16:41,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:41,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-17 18:16:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-17 18:16:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=3046, Unknown=0, NotChecked=0, Total=3660 [2024-09-17 18:16:41,581 INFO L87 Difference]: Start difference. First operand 180 states and 188 transitions. Second operand has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-17 18:16:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:42,722 INFO L93 Difference]: Finished difference Result 331 states and 397 transitions. [2024-09-17 18:16:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-17 18:16:42,723 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 197 [2024-09-17 18:16:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:42,725 INFO L225 Difference]: With dead ends: 331 [2024-09-17 18:16:42,725 INFO L226 Difference]: Without dead ends: 248 [2024-09-17 18:16:42,727 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 392 SyntacticMatches, 39 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5962 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2399, Invalid=11407, Unknown=0, NotChecked=0, Total=13806 [2024-09-17 18:16:42,728 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 221 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:42,728 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 900 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:16:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-17 18:16:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 190. [2024-09-17 18:16:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 152 states have internal predecessors, (155), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-17 18:16:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 198 transitions. [2024-09-17 18:16:42,745 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 198 transitions. Word has length 197 [2024-09-17 18:16:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:42,746 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 198 transitions. [2024-09-17 18:16:42,746 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-17 18:16:42,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 198 transitions. [2024-09-17 18:16:42,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-09-17 18:16:42,747 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:42,747 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:42,765 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-17 18:16:42,948 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-17 18:16:42,948 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:42,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1618547813, now seen corresponding path program 22 times [2024-09-17 18:16:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:42,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23421267] [2024-09-17 18:16:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:42,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:16:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:16:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:16:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:16:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:16:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:16:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:16:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:16:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:16:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:16:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:16:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:16:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:16:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:16:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:16:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:16:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:16:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:16:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:16:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-17 18:16:43,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23421267] [2024-09-17 18:16:43,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23421267] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927607614] [2024-09-17 18:16:43,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:16:43,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:43,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:43,771 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) [2024-09-17 18:16:43,781 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-17 18:16:43,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:16:43,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:43,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-17 18:16:43,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-17 18:16:44,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-17 18:16:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927607614] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:45,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:45,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 24, 24] total 64 [2024-09-17 18:16:45,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790575810] [2024-09-17 18:16:45,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:45,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-17 18:16:45,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:45,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-17 18:16:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=3356, Unknown=0, NotChecked=0, Total=4032 [2024-09-17 18:16:45,372 INFO L87 Difference]: Start difference. First operand 190 states and 198 transitions. Second operand has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-17 18:16:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:46,619 INFO L93 Difference]: Finished difference Result 348 states and 417 transitions. [2024-09-17 18:16:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-17 18:16:46,619 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 207 [2024-09-17 18:16:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:46,622 INFO L225 Difference]: With dead ends: 348 [2024-09-17 18:16:46,622 INFO L226 Difference]: Without dead ends: 261 [2024-09-17 18:16:46,623 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 412 SyntacticMatches, 41 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6626 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2645, Invalid=12607, Unknown=0, NotChecked=0, Total=15252 [2024-09-17 18:16:46,624 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 257 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:46,624 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 935 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:16:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-09-17 18:16:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 200. [2024-09-17 18:16:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 160 states have internal predecessors, (163), 23 states have call successors, (23), 18 states have call predecessors, (23), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-17 18:16:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2024-09-17 18:16:46,643 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 207 [2024-09-17 18:16:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:46,644 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2024-09-17 18:16:46,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-17 18:16:46,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2024-09-17 18:16:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-09-17 18:16:46,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:46,645 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:46,663 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-17 18:16:46,846 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-17 18:16:46,846 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:46,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash 189971291, now seen corresponding path program 23 times [2024-09-17 18:16:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:46,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842569519] [2024-09-17 18:16:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-17 18:16:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-17 18:16:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-17 18:16:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:16:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:16:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:16:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:16:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:16:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:16:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:16:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:16:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:16:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:16:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:16:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:16:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:16:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:16:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:16:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:16:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:16:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-17 18:16:47,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:47,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842569519] [2024-09-17 18:16:47,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842569519] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:47,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300030202] [2024-09-17 18:16:47,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:16:47,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:47,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:47,828 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) [2024-09-17 18:16:47,832 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-17 18:16:47,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-09-17 18:16:47,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:47,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-17 18:16:47,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-17 18:16:48,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-17 18:16:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300030202] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:49,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2024-09-17 18:16:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170977390] [2024-09-17 18:16:49,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:49,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-17 18:16:49,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-17 18:16:49,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2024-09-17 18:16:49,457 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 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) [2024-09-17 18:16:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:50,122 INFO L93 Difference]: Finished difference Result 356 states and 427 transitions. [2024-09-17 18:16:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-17 18:16:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 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 217 [2024-09-17 18:16:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:50,125 INFO L225 Difference]: With dead ends: 356 [2024-09-17 18:16:50,125 INFO L226 Difference]: Without dead ends: 265 [2024-09-17 18:16:50,127 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 414 SyntacticMatches, 40 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2832 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1941, Invalid=5715, Unknown=0, NotChecked=0, Total=7656 [2024-09-17 18:16:50,127 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 156 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:50,128 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 561 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:16:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-09-17 18:16:50,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2024-09-17 18:16:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0248447204968945) internal successors, (165), 162 states have internal predecessors, (165), 23 states have call successors, (23), 18 states have call predecessors, (23), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-17 18:16:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2024-09-17 18:16:50,148 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 217 [2024-09-17 18:16:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:50,148 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2024-09-17 18:16:50,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 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) [2024-09-17 18:16:50,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2024-09-17 18:16:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-17 18:16:50,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:50,150 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:50,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-17 18:16:50,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-17 18:16:50,355 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:50,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:50,355 INFO L85 PathProgramCache]: Analyzing trace with hash -748729312, now seen corresponding path program 24 times [2024-09-17 18:16:50,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:50,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178142988] [2024-09-17 18:16:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:50,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:16:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:16:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:16:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:16:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:16:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:16:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:16:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:50,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:16:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:16:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:16:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:16:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:16:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:16:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:16:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:16:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:16:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:16:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-17 18:16:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-17 18:16:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-17 18:16:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-17 18:16:51,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178142988] [2024-09-17 18:16:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178142988] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120692586] [2024-09-17 18:16:51,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:16:51,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:51,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:51,021 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) [2024-09-17 18:16:51,022 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-17 18:16:51,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-17 18:16:51,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:51,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-17 18:16:51,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-17 18:16:51,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-17 18:16:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120692586] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:51,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 30 [2024-09-17 18:16:51,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108966626] [2024-09-17 18:16:51,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:51,793 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-17 18:16:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-17 18:16:51,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=556, Unknown=0, NotChecked=0, Total=870 [2024-09-17 18:16:51,794 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-17 18:16:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:51,979 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2024-09-17 18:16:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-17 18:16:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 219 [2024-09-17 18:16:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:51,982 INFO L225 Difference]: With dead ends: 221 [2024-09-17 18:16:51,982 INFO L226 Difference]: Without dead ends: 219 [2024-09-17 18:16:51,982 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 454 SyntacticMatches, 43 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2024-09-17 18:16:51,983 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:51,983 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 365 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:16:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-17 18:16:52,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2024-09-17 18:16:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 171 states have internal predecessors, (174), 25 states have call successors, (25), 19 states have call predecessors, (25), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 18:16:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2024-09-17 18:16:52,005 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 219 [2024-09-17 18:16:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:52,006 INFO L474 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2024-09-17 18:16:52,007 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-17 18:16:52,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2024-09-17 18:16:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-09-17 18:16:52,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:52,009 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:52,028 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-17 18:16:52,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-17 18:16:52,210 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:52,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:52,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1979074306, now seen corresponding path program 25 times [2024-09-17 18:16:52,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:52,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793087727] [2024-09-17 18:16:52,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:52,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:16:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:16:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:16:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:16:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:16:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:16:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:16:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:16:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:16:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:16:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:16:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:16:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:16:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:16:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:16:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:16:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:16:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-17 18:16:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-17 18:16:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-17 18:16:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-17 18:16:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-17 18:16:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-17 18:16:53,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793087727] [2024-09-17 18:16:53,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793087727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633784874] [2024-09-17 18:16:53,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:16:53,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:53,282 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) [2024-09-17 18:16:53,283 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-17 18:16:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:53,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-17 18:16:53,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-09-17 18:16:54,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-09-17 18:16:54,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633784874] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:54,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:54,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2024-09-17 18:16:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417091036] [2024-09-17 18:16:54,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:54,913 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-17 18:16:54,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-17 18:16:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2024-09-17 18:16:54,917 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2024-09-17 18:16:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:16:55,703 INFO L93 Difference]: Finished difference Result 383 states and 458 transitions. [2024-09-17 18:16:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-17 18:16:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) Word has length 235 [2024-09-17 18:16:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:16:55,707 INFO L225 Difference]: With dead ends: 383 [2024-09-17 18:16:55,707 INFO L226 Difference]: Without dead ends: 282 [2024-09-17 18:16:55,709 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 451 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2024-09-17 18:16:55,709 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 164 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:16:55,709 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 604 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:16:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-09-17 18:16:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2024-09-17 18:16:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 172 states have (on average 1.0232558139534884) internal successors, (176), 173 states have internal predecessors, (176), 25 states have call successors, (25), 19 states have call predecessors, (25), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 18:16:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2024-09-17 18:16:55,734 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 235 [2024-09-17 18:16:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:16:55,734 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2024-09-17 18:16:55,734 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2024-09-17 18:16:55,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2024-09-17 18:16:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-17 18:16:55,737 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:16:55,737 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:16:55,759 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-17 18:16:55,937 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-17 18:16:55,938 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:16:55,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:16:55,938 INFO L85 PathProgramCache]: Analyzing trace with hash -300150649, now seen corresponding path program 26 times [2024-09-17 18:16:55,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:16:55,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51934861] [2024-09-17 18:16:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:16:55,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:16:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:16:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-17 18:16:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:16:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 18:16:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 18:16:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:16:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:16:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:16:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:16:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:16:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:16:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:16:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:16:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:16:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:16:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:16:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:16:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:16:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-17 18:16:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-17 18:16:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-17 18:16:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-17 18:16:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-17 18:16:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:16:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-17 18:16:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:16:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51934861] [2024-09-17 18:16:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51934861] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:16:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148585796] [2024-09-17 18:16:57,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:16:57,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:16:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:16:57,125 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) [2024-09-17 18:16:57,133 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-17 18:16:57,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:16:57,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:16:57,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-17 18:16:57,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:16:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-17 18:16:57,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:16:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-17 18:16:59,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148585796] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:16:59,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:16:59,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 27, 27] total 73 [2024-09-17 18:16:59,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669600870] [2024-09-17 18:16:59,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:16:59,093 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-17 18:16:59,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:16:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-17 18:16:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4376, Unknown=0, NotChecked=0, Total=5256 [2024-09-17 18:16:59,095 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-17 18:17:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:00,609 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2024-09-17 18:17:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-17 18:17:00,610 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 237 [2024-09-17 18:17:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:00,612 INFO L225 Difference]: With dead ends: 395 [2024-09-17 18:17:00,612 INFO L226 Difference]: Without dead ends: 296 [2024-09-17 18:17:00,615 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 472 SyntacticMatches, 47 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8828 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3455, Invalid=16567, Unknown=0, NotChecked=0, Total=20022 [2024-09-17 18:17:00,616 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 279 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:00,616 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1004 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:17:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-17 18:17:00,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 226. [2024-09-17 18:17:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 180 states have (on average 1.0222222222222221) internal successors, (184), 181 states have internal predecessors, (184), 26 states have call successors, (26), 20 states have call predecessors, (26), 19 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:17:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 235 transitions. [2024-09-17 18:17:00,638 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 235 transitions. Word has length 237 [2024-09-17 18:17:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:00,638 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 235 transitions. [2024-09-17 18:17:00,638 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-17 18:17:00,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 235 transitions. [2024-09-17 18:17:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-09-17 18:17:00,640 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:00,640 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:00,666 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-17 18:17:00,840 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:00,840 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:00,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:00,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1632362173, now seen corresponding path program 27 times [2024-09-17 18:17:00,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:00,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554544] [2024-09-17 18:17:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:00,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 18:17:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:17:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:17:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:17:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:17:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:17:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:17:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:17:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:17:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:17:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:17:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:17:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:17:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:17:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:17:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:17:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:17:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:17:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-17 18:17:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-17 18:17:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-17 18:17:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-17 18:17:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-17 18:17:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-17 18:17:01,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:01,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554544] [2024-09-17 18:17:01,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554544] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:01,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119771140] [2024-09-17 18:17:01,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:17:01,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:01,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:01,969 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) [2024-09-17 18:17:01,972 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-17 18:17:02,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-17 18:17:02,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:02,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-17 18:17:02,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-17 18:17:02,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-17 18:17:04,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119771140] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:04,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:04,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 28, 28] total 76 [2024-09-17 18:17:04,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549156829] [2024-09-17 18:17:04,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:04,162 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-17 18:17:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:04,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-17 18:17:04,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2024-09-17 18:17:04,164 INFO L87 Difference]: Start difference. First operand 226 states and 235 transitions. Second operand has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-17 18:17:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:05,821 INFO L93 Difference]: Finished difference Result 412 states and 494 transitions. [2024-09-17 18:17:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-17 18:17:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 247 [2024-09-17 18:17:05,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:05,825 INFO L225 Difference]: With dead ends: 412 [2024-09-17 18:17:05,825 INFO L226 Difference]: Without dead ends: 309 [2024-09-17 18:17:05,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 492 SyntacticMatches, 49 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9632 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3749, Invalid=18007, Unknown=0, NotChecked=0, Total=21756 [2024-09-17 18:17:05,828 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 269 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:05,828 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1232 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:17:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-09-17 18:17:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 236. [2024-09-17 18:17:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 188 states have (on average 1.0212765957446808) internal successors, (192), 189 states have internal predecessors, (192), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-17 18:17:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 245 transitions. [2024-09-17 18:17:05,853 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 245 transitions. Word has length 247 [2024-09-17 18:17:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:05,853 INFO L474 AbstractCegarLoop]: Abstraction has 236 states and 245 transitions. [2024-09-17 18:17:05,854 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-17 18:17:05,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 245 transitions. [2024-09-17 18:17:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-09-17 18:17:05,855 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:05,855 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:05,875 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-17 18:17:06,056 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:06,056 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:06,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash -334723917, now seen corresponding path program 28 times [2024-09-17 18:17:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651717908] [2024-09-17 18:17:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-17 18:17:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-17 18:17:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:17:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:17:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:17:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:17:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:17:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:17:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:17:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:17:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:17:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:17:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:17:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:17:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:17:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:17:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:17:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:17:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:17:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:17:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:17:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:17:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:17:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:17:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-17 18:17:07,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651717908] [2024-09-17 18:17:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651717908] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524325784] [2024-09-17 18:17:07,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:17:07,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:07,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:07,287 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) [2024-09-17 18:17:07,292 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-17 18:17:07,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:17:07,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:07,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-17 18:17:07,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-17 18:17:08,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-17 18:17:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524325784] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:09,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:09,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 79 [2024-09-17 18:17:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784042922] [2024-09-17 18:17:09,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:09,247 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-17 18:17:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-17 18:17:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=4755, Unknown=0, NotChecked=0, Total=6162 [2024-09-17 18:17:09,249 INFO L87 Difference]: Start difference. First operand 236 states and 245 transitions. Second operand has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-17 18:17:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:10,184 INFO L93 Difference]: Finished difference Result 420 states and 504 transitions. [2024-09-17 18:17:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-17 18:17:10,184 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 257 [2024-09-17 18:17:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:10,187 INFO L225 Difference]: With dead ends: 420 [2024-09-17 18:17:10,187 INFO L226 Difference]: Without dead ends: 313 [2024-09-17 18:17:10,188 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 490 SyntacticMatches, 48 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3976 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2709, Invalid=8003, Unknown=0, NotChecked=0, Total=10712 [2024-09-17 18:17:10,189 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 184 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:10,189 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 658 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:17:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-17 18:17:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 238. [2024-09-17 18:17:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 191 states have internal predecessors, (194), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-17 18:17:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions. [2024-09-17 18:17:10,215 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 257 [2024-09-17 18:17:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:10,215 INFO L474 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions. [2024-09-17 18:17:10,216 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-17 18:17:10,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions. [2024-09-17 18:17:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-09-17 18:17:10,217 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:10,217 INFO L216 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:10,235 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-17 18:17:10,418 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:10,418 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:10,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 126495864, now seen corresponding path program 29 times [2024-09-17 18:17:10,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078858549] [2024-09-17 18:17:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:17:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:17:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:17:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:17:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:17:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:17:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:17:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:17:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:17:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:17:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:17:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:17:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:17:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:17:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:17:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:17:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-17 18:17:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-17 18:17:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-17 18:17:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-17 18:17:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-17 18:17:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-17 18:17:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-17 18:17:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-17 18:17:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 648 proven. 1202 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-17 18:17:11,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078858549] [2024-09-17 18:17:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078858549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013450552] [2024-09-17 18:17:11,339 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:17:11,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:11,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:11,341 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) [2024-09-17 18:17:11,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-17 18:17:11,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-09-17 18:17:11,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:11,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-17 18:17:11,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-17 18:17:11,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-17 18:17:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013450552] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:12,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:12,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 34 [2024-09-17 18:17:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031848292] [2024-09-17 18:17:12,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:12,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-17 18:17:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-17 18:17:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=702, Unknown=0, NotChecked=0, Total=1122 [2024-09-17 18:17:12,307 INFO L87 Difference]: Start difference. First operand 238 states and 247 transitions. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-17 18:17:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:12,460 INFO L93 Difference]: Finished difference Result 257 states and 268 transitions. [2024-09-17 18:17:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-17 18:17:12,460 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 259 [2024-09-17 18:17:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:12,463 INFO L225 Difference]: With dead ends: 257 [2024-09-17 18:17:12,463 INFO L226 Difference]: Without dead ends: 255 [2024-09-17 18:17:12,463 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 538 SyntacticMatches, 51 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=426, Invalid=764, Unknown=0, NotChecked=0, Total=1190 [2024-09-17 18:17:12,464 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:12,464 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 366 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:17:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-09-17 18:17:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 250. [2024-09-17 18:17:12,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 199 states have (on average 1.020100502512563) internal successors, (203), 200 states have internal predecessors, (203), 29 states have call successors, (29), 22 states have call predecessors, (29), 21 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-17 18:17:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 260 transitions. [2024-09-17 18:17:12,490 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 260 transitions. Word has length 259 [2024-09-17 18:17:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:12,490 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 260 transitions. [2024-09-17 18:17:12,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-17 18:17:12,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 260 transitions. [2024-09-17 18:17:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-09-17 18:17:12,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:12,492 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:12,511 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-17 18:17:12,693 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:12,693 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:12,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:12,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1925543770, now seen corresponding path program 30 times [2024-09-17 18:17:12,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:12,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868481915] [2024-09-17 18:17:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:12,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 18:17:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:17:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:17:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:17:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:17:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:17:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:17:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:17:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:17:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:17:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:17:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:17:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:17:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:17:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:17:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:17:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-17 18:17:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-17 18:17:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-17 18:17:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-17 18:17:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-17 18:17:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-17 18:17:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-17 18:17:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-17 18:17:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-17 18:17:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-17 18:17:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1329 proven. 725 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-17 18:17:14,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868481915] [2024-09-17 18:17:14,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868481915] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900386496] [2024-09-17 18:17:14,042 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:17:14,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:14,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:14,044 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) [2024-09-17 18:17:14,045 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-17 18:17:14,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-17 18:17:14,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:14,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-17 18:17:14,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-17 18:17:15,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-17 18:17:16,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900386496] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:16,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:16,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 86 [2024-09-17 18:17:16,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514064726] [2024-09-17 18:17:16,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:16,231 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-17 18:17:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-17 18:17:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5626, Unknown=0, NotChecked=0, Total=7310 [2024-09-17 18:17:16,232 INFO L87 Difference]: Start difference. First operand 250 states and 260 transitions. Second operand has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-17 18:17:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:17,808 INFO L93 Difference]: Finished difference Result 557 states and 674 transitions. [2024-09-17 18:17:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-17 18:17:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 275 [2024-09-17 18:17:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:17,812 INFO L225 Difference]: With dead ends: 557 [2024-09-17 18:17:17,812 INFO L226 Difference]: Without dead ends: 335 [2024-09-17 18:17:17,814 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 525 SyntacticMatches, 49 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6589 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4680, Invalid=14502, Unknown=0, NotChecked=0, Total=19182 [2024-09-17 18:17:17,814 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 240 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:17,814 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 829 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:17:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-09-17 18:17:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 254. [2024-09-17 18:17:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 203 states have (on average 1.019704433497537) internal successors, (207), 204 states have internal predecessors, (207), 29 states have call successors, (29), 22 states have call predecessors, (29), 21 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-17 18:17:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 264 transitions. [2024-09-17 18:17:17,842 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 264 transitions. Word has length 275 [2024-09-17 18:17:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:17,842 INFO L474 AbstractCegarLoop]: Abstraction has 254 states and 264 transitions. [2024-09-17 18:17:17,843 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-17 18:17:17,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 264 transitions. [2024-09-17 18:17:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-09-17 18:17:17,844 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:17,844 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:17,866 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-17 18:17:18,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-17 18:17:18,045 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:18,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:18,046 INFO L85 PathProgramCache]: Analyzing trace with hash -407000284, now seen corresponding path program 31 times [2024-09-17 18:17:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:18,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175156404] [2024-09-17 18:17:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:18,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:17:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:17:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:17:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:17:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:17:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:17:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:17:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:17:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:17:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:17:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:17:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:17:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:17:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:17:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:17:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:17:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:17:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-17 18:17:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-17 18:17:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-17 18:17:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-17 18:17:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-17 18:17:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-17 18:17:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-17 18:17:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-17 18:17:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-17 18:17:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 754 proven. 1406 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-17 18:17:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:19,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175156404] [2024-09-17 18:17:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175156404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:19,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769153898] [2024-09-17 18:17:19,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:17:19,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:19,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:19,061 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) [2024-09-17 18:17:19,063 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-17 18:17:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:19,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-17 18:17:19,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-17 18:17:19,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-17 18:17:20,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769153898] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:20,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:20,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 36 [2024-09-17 18:17:20,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670238562] [2024-09-17 18:17:20,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:20,070 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-17 18:17:20,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:20,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-17 18:17:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=781, Unknown=0, NotChecked=0, Total=1260 [2024-09-17 18:17:20,071 INFO L87 Difference]: Start difference. First operand 254 states and 264 transitions. Second operand has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-17 18:17:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:20,264 INFO L93 Difference]: Finished difference Result 273 states and 285 transitions. [2024-09-17 18:17:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-17 18:17:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 279 [2024-09-17 18:17:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:20,268 INFO L225 Difference]: With dead ends: 273 [2024-09-17 18:17:20,268 INFO L226 Difference]: Without dead ends: 271 [2024-09-17 18:17:20,268 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 580 SyntacticMatches, 55 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=847, Unknown=0, NotChecked=0, Total=1332 [2024-09-17 18:17:20,269 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:20,269 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 444 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:17:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-09-17 18:17:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2024-09-17 18:17:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 212 states have (on average 1.0188679245283019) internal successors, (216), 213 states have internal predecessors, (216), 31 states have call successors, (31), 23 states have call predecessors, (31), 22 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-17 18:17:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 277 transitions. [2024-09-17 18:17:20,311 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 277 transitions. Word has length 279 [2024-09-17 18:17:20,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:20,312 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 277 transitions. [2024-09-17 18:17:20,312 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-17 18:17:20,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 277 transitions. [2024-09-17 18:17:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-09-17 18:17:20,314 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:20,314 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:20,336 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-17 18:17:20,514 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-17 18:17:20,515 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:20,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1516117510, now seen corresponding path program 32 times [2024-09-17 18:17:20,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:20,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772033020] [2024-09-17 18:17:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:20,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:17:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:17:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:17:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:17:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:17:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:17:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:17:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:17:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:17:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:17:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:17:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:17:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:17:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:17:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:17:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:17:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:17:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-17 18:17:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-17 18:17:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-17 18:17:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-17 18:17:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-17 18:17:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-17 18:17:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-17 18:17:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-17 18:17:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-17 18:17:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-17 18:17:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-17 18:17:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1543 proven. 837 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-17 18:17:22,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:22,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772033020] [2024-09-17 18:17:22,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772033020] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:22,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55569052] [2024-09-17 18:17:22,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:17:22,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:22,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:22,101 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) [2024-09-17 18:17:22,102 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-17 18:17:22,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:17:22,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:22,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-17 18:17:22,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1728 proven. 756 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2024-09-17 18:17:23,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1622 proven. 756 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2024-09-17 18:17:24,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55569052] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:24,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:24,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 89 [2024-09-17 18:17:24,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708274549] [2024-09-17 18:17:24,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:24,583 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-17 18:17:24,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-17 18:17:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=6059, Unknown=0, NotChecked=0, Total=7832 [2024-09-17 18:17:24,585 INFO L87 Difference]: Start difference. First operand 266 states and 277 transitions. Second operand has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) [2024-09-17 18:17:25,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:25,774 INFO L93 Difference]: Finished difference Result 477 states and 572 transitions. [2024-09-17 18:17:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-17 18:17:25,774 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) Word has length 295 [2024-09-17 18:17:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:25,777 INFO L225 Difference]: With dead ends: 477 [2024-09-17 18:17:25,777 INFO L226 Difference]: Without dead ends: 352 [2024-09-17 18:17:25,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 565 SyntacticMatches, 54 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3399, Invalid=10173, Unknown=0, NotChecked=0, Total=13572 [2024-09-17 18:17:25,780 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 210 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:25,780 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 916 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:17:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-17 18:17:25,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2024-09-17 18:17:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 214 states have (on average 1.0186915887850467) internal successors, (218), 215 states have internal predecessors, (218), 31 states have call successors, (31), 23 states have call predecessors, (31), 22 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-17 18:17:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 279 transitions. [2024-09-17 18:17:25,812 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 279 transitions. Word has length 295 [2024-09-17 18:17:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:25,812 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 279 transitions. [2024-09-17 18:17:25,812 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) [2024-09-17 18:17:25,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 279 transitions. [2024-09-17 18:17:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-09-17 18:17:25,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:25,814 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:25,837 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-17 18:17:26,015 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-17 18:17:26,015 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:26,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1059375627, now seen corresponding path program 33 times [2024-09-17 18:17:26,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:26,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333179824] [2024-09-17 18:17:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:26,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-17 18:17:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:17:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:17:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:17:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:17:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:17:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:17:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:17:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:17:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:17:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:17:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:17:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:17:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:17:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:17:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:17:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:17:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:17:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:17:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:17:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:17:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:17:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:17:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-17 18:17:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-17 18:17:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-17 18:17:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-17 18:17:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-17 18:17:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-17 18:17:27,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333179824] [2024-09-17 18:17:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333179824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497487267] [2024-09-17 18:17:27,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:17:27,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:27,590 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) [2024-09-17 18:17:27,591 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-17 18:17:27,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-09-17 18:17:27,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:27,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-17 18:17:27,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-17 18:17:28,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-17 18:17:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497487267] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:30,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:30,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 33, 33] total 91 [2024-09-17 18:17:30,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819825170] [2024-09-17 18:17:30,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:30,614 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-17 18:17:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:30,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-17 18:17:30,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1369, Invalid=6821, Unknown=0, NotChecked=0, Total=8190 [2024-09-17 18:17:30,617 INFO L87 Difference]: Start difference. First operand 268 states and 279 transitions. Second operand has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-17 18:17:32,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:32,772 INFO L93 Difference]: Finished difference Result 489 states and 588 transitions. [2024-09-17 18:17:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-09-17 18:17:32,773 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 297 [2024-09-17 18:17:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:32,776 INFO L225 Difference]: With dead ends: 489 [2024-09-17 18:17:32,776 INFO L226 Difference]: Without dead ends: 366 [2024-09-17 18:17:32,780 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 592 SyntacticMatches, 59 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14177 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5399, Invalid=26107, Unknown=0, NotChecked=0, Total=31506 [2024-09-17 18:17:32,780 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 391 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:32,781 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1316 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-17 18:17:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-09-17 18:17:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 278. [2024-09-17 18:17:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 222 states have (on average 1.018018018018018) internal successors, (226), 223 states have internal predecessors, (226), 32 states have call successors, (32), 24 states have call predecessors, (32), 23 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-17 18:17:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 289 transitions. [2024-09-17 18:17:32,811 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 289 transitions. Word has length 297 [2024-09-17 18:17:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:32,812 INFO L474 AbstractCegarLoop]: Abstraction has 278 states and 289 transitions. [2024-09-17 18:17:32,812 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-17 18:17:32,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 289 transitions. [2024-09-17 18:17:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-09-17 18:17:32,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:32,814 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:32,840 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-17 18:17:33,014 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-17 18:17:33,018 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:33,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1902340415, now seen corresponding path program 34 times [2024-09-17 18:17:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:33,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288379741] [2024-09-17 18:17:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-17 18:17:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:17:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:17:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:17:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:17:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:17:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:17:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:17:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:17:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:17:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:17:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:17:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:17:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:17:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:17:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-17 18:17:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-17 18:17:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-17 18:17:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-17 18:17:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-17 18:17:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-17 18:17:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-17 18:17:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-17 18:17:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-17 18:17:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-17 18:17:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-17 18:17:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-17 18:17:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-17 18:17:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-17 18:17:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-17 18:17:34,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288379741] [2024-09-17 18:17:34,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288379741] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764217849] [2024-09-17 18:17:34,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:17:34,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:34,929 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) [2024-09-17 18:17:34,930 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-17 18:17:35,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:17:35,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:35,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-17 18:17:35,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-17 18:17:36,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-17 18:17:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764217849] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:38,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 34, 34] total 94 [2024-09-17 18:17:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266547856] [2024-09-17 18:17:38,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:38,116 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-17 18:17:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-17 18:17:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=7281, Unknown=0, NotChecked=0, Total=8742 [2024-09-17 18:17:38,118 INFO L87 Difference]: Start difference. First operand 278 states and 289 transitions. Second operand has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-17 18:17:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:40,249 INFO L93 Difference]: Finished difference Result 506 states and 608 transitions. [2024-09-17 18:17:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-09-17 18:17:40,249 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 307 [2024-09-17 18:17:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:40,252 INFO L225 Difference]: With dead ends: 506 [2024-09-17 18:17:40,252 INFO L226 Difference]: Without dead ends: 379 [2024-09-17 18:17:40,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 612 SyntacticMatches, 61 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15191 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5765, Invalid=27907, Unknown=0, NotChecked=0, Total=33672 [2024-09-17 18:17:40,258 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 349 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:40,258 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1402 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-17 18:17:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-17 18:17:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 288. [2024-09-17 18:17:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 230 states have (on average 1.017391304347826) internal successors, (234), 231 states have internal predecessors, (234), 33 states have call successors, (33), 25 states have call predecessors, (33), 24 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 18:17:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 299 transitions. [2024-09-17 18:17:40,291 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 299 transitions. Word has length 307 [2024-09-17 18:17:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:40,291 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 299 transitions. [2024-09-17 18:17:40,292 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-17 18:17:40,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 299 transitions. [2024-09-17 18:17:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-17 18:17:40,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:40,293 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:40,310 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-17 18:17:40,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-17 18:17:40,494 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:40,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:40,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2081266487, now seen corresponding path program 35 times [2024-09-17 18:17:40,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:40,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622629174] [2024-09-17 18:17:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:40,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 18:17:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 18:17:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:17:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:17:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:17:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:17:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:17:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:17:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:17:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:17:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:17:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:17:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:17:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:17:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:17:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-17 18:17:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-17 18:17:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-17 18:17:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-17 18:17:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-17 18:17:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-17 18:17:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-17 18:17:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-17 18:17:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-17 18:17:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-17 18:17:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-17 18:17:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-17 18:17:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-17 18:17:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-17 18:17:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-17 18:17:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-17 18:17:42,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622629174] [2024-09-17 18:17:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622629174] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:42,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841193769] [2024-09-17 18:17:42,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:17:42,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:42,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:42,301 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) [2024-09-17 18:17:42,304 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-17 18:17:42,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-17 18:17:42,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:42,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-17 18:17:42,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-17 18:17:44,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-17 18:17:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841193769] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:45,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:45,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 97 [2024-09-17 18:17:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087921545] [2024-09-17 18:17:45,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:45,200 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-17 18:17:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-17 18:17:45,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=7197, Unknown=0, NotChecked=0, Total=9312 [2024-09-17 18:17:45,201 INFO L87 Difference]: Start difference. First operand 288 states and 299 transitions. Second operand has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-17 18:17:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:46,627 INFO L93 Difference]: Finished difference Result 514 states and 618 transitions. [2024-09-17 18:17:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-17 18:17:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 317 [2024-09-17 18:17:46,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:46,630 INFO L225 Difference]: With dead ends: 514 [2024-09-17 18:17:46,630 INFO L226 Difference]: Without dead ends: 383 [2024-09-17 18:17:46,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 604 SyntacticMatches, 60 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6052 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4101, Invalid=12155, Unknown=0, NotChecked=0, Total=16256 [2024-09-17 18:17:46,632 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 300 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:46,632 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 916 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:17:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-09-17 18:17:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 290. [2024-09-17 18:17:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 232 states have (on average 1.0172413793103448) internal successors, (236), 233 states have internal predecessors, (236), 33 states have call successors, (33), 25 states have call predecessors, (33), 24 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 18:17:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 301 transitions. [2024-09-17 18:17:46,667 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 301 transitions. Word has length 317 [2024-09-17 18:17:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:46,668 INFO L474 AbstractCegarLoop]: Abstraction has 290 states and 301 transitions. [2024-09-17 18:17:46,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-17 18:17:46,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 301 transitions. [2024-09-17 18:17:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-09-17 18:17:46,670 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:46,670 INFO L216 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:46,693 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-17 18:17:46,871 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-17 18:17:46,871 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:46,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1371323012, now seen corresponding path program 36 times [2024-09-17 18:17:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:46,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760239410] [2024-09-17 18:17:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:46,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:17:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:17:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:17:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:17:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:17:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:17:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:17:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:17:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:17:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:17:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:17:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:17:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:17:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:17:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:17:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:17:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-17 18:17:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-17 18:17:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-17 18:17:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-17 18:17:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-17 18:17:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-17 18:17:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-17 18:17:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-17 18:17:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-17 18:17:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-17 18:17:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-17 18:17:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-17 18:17:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-17 18:17:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-17 18:17:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-17 18:17:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:48,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760239410] [2024-09-17 18:17:48,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760239410] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:48,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357353047] [2024-09-17 18:17:48,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:17:48,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:48,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:48,152 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) [2024-09-17 18:17:48,153 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-17 18:17:48,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-09-17 18:17:48,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:48,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-17 18:17:48,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-17 18:17:48,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-17 18:17:49,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357353047] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:49,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:49,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 40 [2024-09-17 18:17:49,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140726890] [2024-09-17 18:17:49,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:49,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-17 18:17:49,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-17 18:17:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2024-09-17 18:17:49,483 INFO L87 Difference]: Start difference. First operand 290 states and 301 transitions. Second operand has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 18:17:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:49,825 INFO L93 Difference]: Finished difference Result 309 states and 322 transitions. [2024-09-17 18:17:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-17 18:17:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 319 [2024-09-17 18:17:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:49,828 INFO L225 Difference]: With dead ends: 309 [2024-09-17 18:17:49,828 INFO L226 Difference]: Without dead ends: 307 [2024-09-17 18:17:49,828 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 664 SyntacticMatches, 63 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=615, Invalid=1025, Unknown=0, NotChecked=0, Total=1640 [2024-09-17 18:17:49,830 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 12 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:49,830 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 490 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:17:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-17 18:17:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 302. [2024-09-17 18:17:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 241 states have (on average 1.016597510373444) internal successors, (245), 242 states have internal predecessors, (245), 35 states have call successors, (35), 26 states have call predecessors, (35), 25 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-17 18:17:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 314 transitions. [2024-09-17 18:17:49,864 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 314 transitions. Word has length 319 [2024-09-17 18:17:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:49,865 INFO L474 AbstractCegarLoop]: Abstraction has 302 states and 314 transitions. [2024-09-17 18:17:49,865 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 18:17:49,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 314 transitions. [2024-09-17 18:17:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-09-17 18:17:49,867 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:49,867 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:49,884 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-17 18:17:50,068 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-17 18:17:50,068 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:50,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1624508510, now seen corresponding path program 37 times [2024-09-17 18:17:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:50,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678313176] [2024-09-17 18:17:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:17:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:17:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:17:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:17:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:17:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:17:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:17:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:17:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:17:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:17:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:17:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:17:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:17:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:17:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:17:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:17:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-17 18:17:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-17 18:17:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-17 18:17:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-17 18:17:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-17 18:17:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-17 18:17:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-17 18:17:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-17 18:17:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-17 18:17:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-17 18:17:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-17 18:17:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-17 18:17:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-17 18:17:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-17 18:17:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-17 18:17:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-17 18:17:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-17 18:17:52,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:52,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678313176] [2024-09-17 18:17:52,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678313176] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:52,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884235295] [2024-09-17 18:17:52,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:17:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:52,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:52,047 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) [2024-09-17 18:17:52,049 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-17 18:17:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:52,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-17 18:17:52,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:17:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2024-09-17 18:17:53,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:17:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2024-09-17 18:17:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884235295] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:17:54,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:17:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 101 [2024-09-17 18:17:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810125755] [2024-09-17 18:17:54,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:17:54,976 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-17 18:17:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:17:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-17 18:17:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=7819, Unknown=0, NotChecked=0, Total=10100 [2024-09-17 18:17:54,978 INFO L87 Difference]: Start difference. First operand 302 states and 314 transitions. Second operand has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2024-09-17 18:17:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:17:56,494 INFO L93 Difference]: Finished difference Result 541 states and 649 transitions. [2024-09-17 18:17:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-17 18:17:56,495 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) Word has length 335 [2024-09-17 18:17:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:17:56,498 INFO L225 Difference]: With dead ends: 541 [2024-09-17 18:17:56,498 INFO L226 Difference]: Without dead ends: 400 [2024-09-17 18:17:56,500 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 641 SyntacticMatches, 62 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4395, Invalid=13161, Unknown=0, NotChecked=0, Total=17556 [2024-09-17 18:17:56,501 INFO L434 NwaCegarLoop]: 105 mSDtfsCounter, 220 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:17:56,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 937 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:17:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-17 18:17:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 304. [2024-09-17 18:17:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 243 states have (on average 1.0164609053497942) internal successors, (247), 244 states have internal predecessors, (247), 35 states have call successors, (35), 26 states have call predecessors, (35), 25 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-17 18:17:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 316 transitions. [2024-09-17 18:17:56,537 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 316 transitions. Word has length 335 [2024-09-17 18:17:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:17:56,537 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 316 transitions. [2024-09-17 18:17:56,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2024-09-17 18:17:56,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 316 transitions. [2024-09-17 18:17:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-09-17 18:17:56,540 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:17:56,540 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:17:56,563 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-17 18:17:56,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-17 18:17:56,741 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:17:56,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:17:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash -476083357, now seen corresponding path program 38 times [2024-09-17 18:17:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:17:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059315299] [2024-09-17 18:17:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:17:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:17:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:17:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:17:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:17:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:17:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:17:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:17:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:17:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:17:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:17:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:17:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:17:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:17:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:17:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:17:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:17:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:17:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:17:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:17:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:17:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:17:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:17:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:17:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:17:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-17 18:17:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-17 18:17:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-17 18:17:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-17 18:17:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-17 18:17:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-17 18:17:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-17 18:17:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-17 18:17:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-17 18:17:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-17 18:17:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:17:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-17 18:17:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:17:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059315299] [2024-09-17 18:17:58,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059315299] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:17:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513923032] [2024-09-17 18:17:58,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:17:58,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:17:58,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:17:58,846 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) [2024-09-17 18:17:58,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-17 18:17:59,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:17:59,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:17:59,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-17 18:17:59,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-17 18:18:00,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-17 18:18:02,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513923032] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:02,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:02,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 37, 37] total 103 [2024-09-17 18:18:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80585611] [2024-09-17 18:18:02,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:02,770 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-09-17 18:18:02,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-09-17 18:18:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1755, Invalid=8751, Unknown=0, NotChecked=0, Total=10506 [2024-09-17 18:18:02,772 INFO L87 Difference]: Start difference. First operand 304 states and 316 transitions. Second operand has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-17 18:18:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:05,346 INFO L93 Difference]: Finished difference Result 553 states and 665 transitions. [2024-09-17 18:18:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-17 18:18:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 337 [2024-09-17 18:18:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:05,350 INFO L225 Difference]: With dead ends: 553 [2024-09-17 18:18:05,350 INFO L226 Difference]: Without dead ends: 414 [2024-09-17 18:18:05,354 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 672 SyntacticMatches, 67 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18443 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=6935, Invalid=33667, Unknown=0, NotChecked=0, Total=40602 [2024-09-17 18:18:05,354 INFO L434 NwaCegarLoop]: 106 mSDtfsCounter, 509 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:05,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1475 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-17 18:18:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-09-17 18:18:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 314. [2024-09-17 18:18:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 251 states have (on average 1.0159362549800797) internal successors, (255), 252 states have internal predecessors, (255), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-17 18:18:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 326 transitions. [2024-09-17 18:18:05,394 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 326 transitions. Word has length 337 [2024-09-17 18:18:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:05,395 INFO L474 AbstractCegarLoop]: Abstraction has 314 states and 326 transitions. [2024-09-17 18:18:05,395 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-17 18:18:05,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:05,396 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 326 transitions. [2024-09-17 18:18:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-09-17 18:18:05,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:05,397 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:05,416 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-17 18:18:05,598 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:05,598 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:05,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1552902375, now seen corresponding path program 39 times [2024-09-17 18:18:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234752615] [2024-09-17 18:18:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:18:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-17 18:18:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:18:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:18:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:18:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:18:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:18:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:18:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:18:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:18:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:18:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:18:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:18:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:18:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:18:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-17 18:18:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-17 18:18:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-17 18:18:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-17 18:18:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-17 18:18:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-17 18:18:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-17 18:18:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-17 18:18:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-17 18:18:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-17 18:18:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-17 18:18:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-17 18:18:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-17 18:18:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-17 18:18:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-17 18:18:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-17 18:18:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-17 18:18:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-17 18:18:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-17 18:18:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-17 18:18:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:18:07,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234752615] [2024-09-17 18:18:07,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234752615] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:18:07,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379950566] [2024-09-17 18:18:07,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:18:07,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:07,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:18:07,792 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) [2024-09-17 18:18:07,794 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-17 18:18:08,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2024-09-17 18:18:08,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:18:08,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-17 18:18:08,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-17 18:18:09,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-17 18:18:11,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379950566] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:11,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:11,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 38, 38] total 106 [2024-09-17 18:18:11,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515863110] [2024-09-17 18:18:11,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:11,806 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-17 18:18:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:11,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-17 18:18:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1859, Invalid=9271, Unknown=0, NotChecked=0, Total=11130 [2024-09-17 18:18:11,809 INFO L87 Difference]: Start difference. First operand 314 states and 326 transitions. Second operand has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-17 18:18:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:14,556 INFO L93 Difference]: Finished difference Result 570 states and 685 transitions. [2024-09-17 18:18:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-09-17 18:18:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 347 [2024-09-17 18:18:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:14,560 INFO L225 Difference]: With dead ends: 570 [2024-09-17 18:18:14,560 INFO L226 Difference]: Without dead ends: 427 [2024-09-17 18:18:14,564 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 692 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19597 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=7349, Invalid=35707, Unknown=0, NotChecked=0, Total=43056 [2024-09-17 18:18:14,565 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 567 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:14,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1580 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-17 18:18:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-17 18:18:14,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 324. [2024-09-17 18:18:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.0154440154440154) internal successors, (263), 260 states have internal predecessors, (263), 37 states have call successors, (37), 28 states have call predecessors, (37), 27 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-17 18:18:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 336 transitions. [2024-09-17 18:18:14,605 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 336 transitions. Word has length 347 [2024-09-17 18:18:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:14,605 INFO L474 AbstractCegarLoop]: Abstraction has 324 states and 336 transitions. [2024-09-17 18:18:14,606 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-17 18:18:14,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 336 transitions. [2024-09-17 18:18:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-17 18:18:14,608 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:14,608 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:14,627 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-17 18:18:14,808 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:14,810 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:14,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1587223183, now seen corresponding path program 40 times [2024-09-17 18:18:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:14,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124938396] [2024-09-17 18:18:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:18:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 18:18:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:18:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:18:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:18:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:18:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:18:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:18:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:18:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:18:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:18:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:18:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:18:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:18:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:18:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-17 18:18:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-17 18:18:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-17 18:18:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-17 18:18:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-17 18:18:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-17 18:18:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-17 18:18:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-17 18:18:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-17 18:18:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-17 18:18:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-17 18:18:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-17 18:18:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-17 18:18:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-17 18:18:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-17 18:18:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-17 18:18:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-17 18:18:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-17 18:18:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-17 18:18:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-17 18:18:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-17 18:18:17,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:18:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124938396] [2024-09-17 18:18:17,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124938396] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:18:17,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902385020] [2024-09-17 18:18:17,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:18:17,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:18:17,254 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) [2024-09-17 18:18:17,255 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-17 18:18:17,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:18:17,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:18:17,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-17 18:18:17,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-17 18:18:18,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-17 18:18:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902385020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:21,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 39, 39] total 109 [2024-09-17 18:18:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771781571] [2024-09-17 18:18:21,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:21,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-09-17 18:18:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:21,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-09-17 18:18:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1966, Invalid=9806, Unknown=0, NotChecked=0, Total=11772 [2024-09-17 18:18:21,523 INFO L87 Difference]: Start difference. First operand 324 states and 336 transitions. Second operand has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-17 18:18:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:24,356 INFO L93 Difference]: Finished difference Result 587 states and 705 transitions. [2024-09-17 18:18:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-09-17 18:18:24,357 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 357 [2024-09-17 18:18:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:24,360 INFO L225 Difference]: With dead ends: 587 [2024-09-17 18:18:24,360 INFO L226 Difference]: Without dead ends: 440 [2024-09-17 18:18:24,363 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 712 SyntacticMatches, 71 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20786 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=7775, Invalid=37807, Unknown=0, NotChecked=0, Total=45582 [2024-09-17 18:18:24,364 INFO L434 NwaCegarLoop]: 112 mSDtfsCounter, 619 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:24,364 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1527 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-17 18:18:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-09-17 18:18:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 334. [2024-09-17 18:18:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 267 states have (on average 1.0149812734082397) internal successors, (271), 268 states have internal predecessors, (271), 38 states have call successors, (38), 29 states have call predecessors, (38), 28 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-17 18:18:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 346 transitions. [2024-09-17 18:18:24,407 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 346 transitions. Word has length 357 [2024-09-17 18:18:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:24,409 INFO L474 AbstractCegarLoop]: Abstraction has 334 states and 346 transitions. [2024-09-17 18:18:24,410 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-17 18:18:24,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 346 transitions. [2024-09-17 18:18:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-09-17 18:18:24,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:24,412 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:24,430 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-17 18:18:24,612 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-17 18:18:24,613 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:24,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1287988677, now seen corresponding path program 41 times [2024-09-17 18:18:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:24,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098461] [2024-09-17 18:18:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:18:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-17 18:18:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-17 18:18:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:18:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:18:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:18:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:18:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:18:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:18:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:18:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:18:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:18:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:18:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:18:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:18:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:18:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-17 18:18:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-17 18:18:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-17 18:18:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-17 18:18:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-17 18:18:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-17 18:18:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-17 18:18:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-17 18:18:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-17 18:18:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-17 18:18:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-17 18:18:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-17 18:18:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-17 18:18:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-17 18:18:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-17 18:18:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-17 18:18:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-17 18:18:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-17 18:18:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-17 18:18:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-17 18:18:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-17 18:18:27,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:18:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098461] [2024-09-17 18:18:27,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098461] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:18:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155063553] [2024-09-17 18:18:27,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:18:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:18:27,095 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) [2024-09-17 18:18:27,097 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-17 18:18:27,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-09-17 18:18:27,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:18:27,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-17 18:18:27,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-17 18:18:29,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-17 18:18:30,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155063553] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:30,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:30,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 112 [2024-09-17 18:18:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200805276] [2024-09-17 18:18:30,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:30,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-17 18:18:30,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:30,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-17 18:18:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2815, Invalid=9617, Unknown=0, NotChecked=0, Total=12432 [2024-09-17 18:18:30,734 INFO L87 Difference]: Start difference. First operand 334 states and 346 transitions. Second operand has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-17 18:18:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:32,476 INFO L93 Difference]: Finished difference Result 595 states and 715 transitions. [2024-09-17 18:18:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-17 18:18:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 367 [2024-09-17 18:18:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:32,480 INFO L225 Difference]: With dead ends: 595 [2024-09-17 18:18:32,480 INFO L226 Difference]: Without dead ends: 444 [2024-09-17 18:18:32,483 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 699 SyntacticMatches, 70 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8112 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5481, Invalid=16275, Unknown=0, NotChecked=0, Total=21756 [2024-09-17 18:18:32,483 INFO L434 NwaCegarLoop]: 117 mSDtfsCounter, 344 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:32,484 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 772 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:18:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-09-17 18:18:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 336. [2024-09-17 18:18:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 269 states have (on average 1.0148698884758365) internal successors, (273), 270 states have internal predecessors, (273), 38 states have call successors, (38), 29 states have call predecessors, (38), 28 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-17 18:18:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 348 transitions. [2024-09-17 18:18:32,525 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 348 transitions. Word has length 367 [2024-09-17 18:18:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:32,525 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 348 transitions. [2024-09-17 18:18:32,526 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-17 18:18:32,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 348 transitions. [2024-09-17 18:18:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-09-17 18:18:32,528 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:32,528 INFO L216 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:32,547 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-17 18:18:32,728 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:32,729 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:32,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1107602230, now seen corresponding path program 42 times [2024-09-17 18:18:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:32,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767904064] [2024-09-17 18:18:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:18:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:18:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:18:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:18:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:18:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:18:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:18:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:18:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:18:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:18:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:18:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:18:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:18:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:18:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:18:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:18:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:18:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:18:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:18:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:18:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:18:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:18:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-17 18:18:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-17 18:18:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-17 18:18:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-17 18:18:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-17 18:18:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-17 18:18:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-17 18:18:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-17 18:18:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-17 18:18:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-17 18:18:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-17 18:18:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-17 18:18:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-17 18:18:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-17 18:18:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-17 18:18:34,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:18:34,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767904064] [2024-09-17 18:18:34,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767904064] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:18:34,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827305474] [2024-09-17 18:18:34,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:18:34,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:34,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:18:34,411 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) [2024-09-17 18:18:34,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-17 18:18:34,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-17 18:18:34,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:18:34,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-17 18:18:34,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-17 18:18:34,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-17 18:18:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827305474] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:36,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:36,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 45 [2024-09-17 18:18:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374837562] [2024-09-17 18:18:36,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:36,013 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-17 18:18:36,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-17 18:18:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=794, Invalid=1186, Unknown=0, NotChecked=0, Total=1980 [2024-09-17 18:18:36,015 INFO L87 Difference]: Start difference. First operand 336 states and 348 transitions. Second operand has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-17 18:18:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:36,260 INFO L93 Difference]: Finished difference Result 355 states and 369 transitions. [2024-09-17 18:18:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-17 18:18:36,260 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 369 [2024-09-17 18:18:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:36,264 INFO L225 Difference]: With dead ends: 355 [2024-09-17 18:18:36,264 INFO L226 Difference]: Without dead ends: 353 [2024-09-17 18:18:36,264 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 769 SyntacticMatches, 73 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=800, Invalid=1270, Unknown=0, NotChecked=0, Total=2070 [2024-09-17 18:18:36,265 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:36,265 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 472 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:18:36,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-09-17 18:18:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 348. [2024-09-17 18:18:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 278 states have (on average 1.014388489208633) internal successors, (282), 279 states have internal predecessors, (282), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-17 18:18:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 361 transitions. [2024-09-17 18:18:36,337 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 361 transitions. Word has length 369 [2024-09-17 18:18:36,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:36,338 INFO L474 AbstractCegarLoop]: Abstraction has 348 states and 361 transitions. [2024-09-17 18:18:36,339 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-17 18:18:36,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 361 transitions. [2024-09-17 18:18:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-09-17 18:18:36,341 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:36,341 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:36,363 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-17 18:18:36,541 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:36,542 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:36,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2008040532, now seen corresponding path program 43 times [2024-09-17 18:18:36,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:36,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568608638] [2024-09-17 18:18:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:36,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:18:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 18:18:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:18:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:18:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:18:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:18:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:18:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:18:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:18:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:18:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:18:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:18:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:18:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:18:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:18:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:18:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:18:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:18:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:18:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:18:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:18:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:18:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-17 18:18:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-17 18:18:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-17 18:18:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-17 18:18:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-17 18:18:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-17 18:18:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-17 18:18:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-17 18:18:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-17 18:18:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-17 18:18:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-17 18:18:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-17 18:18:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-17 18:18:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-17 18:18:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-17 18:18:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-17 18:18:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-17 18:18:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:18:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568608638] [2024-09-17 18:18:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568608638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:18:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433517706] [2024-09-17 18:18:39,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:18:39,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:39,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:18:39,200 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) [2024-09-17 18:18:39,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-17 18:18:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:39,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-17 18:18:39,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2024-09-17 18:18:41,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2024-09-17 18:18:42,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433517706] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:42,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:42,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 116 [2024-09-17 18:18:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108464683] [2024-09-17 18:18:42,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:42,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-17 18:18:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-17 18:18:42,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=10334, Unknown=0, NotChecked=0, Total=13340 [2024-09-17 18:18:42,977 INFO L87 Difference]: Start difference. First operand 348 states and 361 transitions. Second operand has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2024-09-17 18:18:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:44,847 INFO L93 Difference]: Finished difference Result 622 states and 746 transitions. [2024-09-17 18:18:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-17 18:18:44,848 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) Word has length 385 [2024-09-17 18:18:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:44,851 INFO L225 Difference]: With dead ends: 622 [2024-09-17 18:18:44,851 INFO L226 Difference]: Without dead ends: 461 [2024-09-17 18:18:44,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 736 SyntacticMatches, 72 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8707 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5820, Invalid=17436, Unknown=0, NotChecked=0, Total=23256 [2024-09-17 18:18:44,855 INFO L434 NwaCegarLoop]: 120 mSDtfsCounter, 270 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:44,855 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 875 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:18:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-09-17 18:18:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 350. [2024-09-17 18:18:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 280 states have (on average 1.0142857142857142) internal successors, (284), 281 states have internal predecessors, (284), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-17 18:18:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 363 transitions. [2024-09-17 18:18:44,901 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 363 transitions. Word has length 385 [2024-09-17 18:18:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:44,901 INFO L474 AbstractCegarLoop]: Abstraction has 350 states and 363 transitions. [2024-09-17 18:18:44,902 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2024-09-17 18:18:44,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 363 transitions. [2024-09-17 18:18:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-09-17 18:18:44,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:44,904 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:44,926 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-17 18:18:45,105 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-17 18:18:45,105 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:45,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1538518159, now seen corresponding path program 44 times [2024-09-17 18:18:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965736172] [2024-09-17 18:18:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:45,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:18:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:18:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-17 18:18:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-17 18:18:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:18:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:18:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-17 18:18:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-17 18:18:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:18:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-17 18:18:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-17 18:18:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-17 18:18:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-17 18:18:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-17 18:18:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-17 18:18:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-17 18:18:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-17 18:18:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-17 18:18:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-17 18:18:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-17 18:18:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-17 18:18:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-17 18:18:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-17 18:18:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-17 18:18:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-17 18:18:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-17 18:18:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-17 18:18:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-17 18:18:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-17 18:18:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-17 18:18:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-17 18:18:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-17 18:18:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-17 18:18:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-17 18:18:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-17 18:18:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-17 18:18:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-17 18:18:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-17 18:18:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-17 18:18:47,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:18:47,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965736172] [2024-09-17 18:18:47,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965736172] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:18:47,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824728855] [2024-09-17 18:18:47,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:18:47,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:47,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:18:47,771 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) [2024-09-17 18:18:47,772 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-17 18:18:47,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:18:47,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:18:48,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-17 18:18:48,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-17 18:18:50,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-17 18:18:51,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824728855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:51,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:51,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 118 [2024-09-17 18:18:51,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851840897] [2024-09-17 18:18:51,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:51,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-09-17 18:18:51,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-09-17 18:18:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3123, Invalid=10683, Unknown=0, NotChecked=0, Total=13806 [2024-09-17 18:18:51,686 INFO L87 Difference]: Start difference. First operand 350 states and 363 transitions. Second operand has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-17 18:18:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:53,709 INFO L93 Difference]: Finished difference Result 625 states and 752 transitions. [2024-09-17 18:18:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-17 18:18:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 387 [2024-09-17 18:18:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:53,713 INFO L225 Difference]: With dead ends: 625 [2024-09-17 18:18:53,713 INFO L226 Difference]: Without dead ends: 466 [2024-09-17 18:18:53,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 737 SyntacticMatches, 74 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9020 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6089, Invalid=18091, Unknown=0, NotChecked=0, Total=24180 [2024-09-17 18:18:53,717 INFO L434 NwaCegarLoop]: 123 mSDtfsCounter, 328 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:53,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1167 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:18:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-09-17 18:18:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 352. [2024-09-17 18:18:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 282 states have (on average 1.0141843971631206) internal successors, (286), 283 states have internal predecessors, (286), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-17 18:18:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 365 transitions. [2024-09-17 18:18:53,765 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 365 transitions. Word has length 387 [2024-09-17 18:18:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:53,765 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 365 transitions. [2024-09-17 18:18:53,766 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-17 18:18:53,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 365 transitions. [2024-09-17 18:18:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-17 18:18:53,768 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:53,768 INFO L216 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:53,787 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-17 18:18:53,968 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-09-17 18:18:53,969 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:53,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:53,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1299083786, now seen corresponding path program 45 times [2024-09-17 18:18:53,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:53,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488009616] [2024-09-17 18:18:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:53,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:18:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:18:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:18:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:18:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:18:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:18:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:18:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:18:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:18:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:18:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:18:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:18:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:18:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:18:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-17 18:18:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-17 18:18:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-17 18:18:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-17 18:18:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-17 18:18:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-17 18:18:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-17 18:18:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-17 18:18:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-17 18:18:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-17 18:18:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-17 18:18:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-17 18:18:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-17 18:18:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-17 18:18:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-17 18:18:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-17 18:18:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-17 18:18:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-17 18:18:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-17 18:18:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-17 18:18:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-17 18:18:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-17 18:18:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-17 18:18:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-17 18:18:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:18:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1480 proven. 2814 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-17 18:18:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:18:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488009616] [2024-09-17 18:18:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488009616] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:18:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969205610] [2024-09-17 18:18:55,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:18:55,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:18:55,836 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) [2024-09-17 18:18:55,837 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-17 18:18:56,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-17 18:18:56,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:18:56,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-17 18:18:56,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:18:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-17 18:18:56,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:18:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-17 18:18:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969205610] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:18:57,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:18:57,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 47 [2024-09-17 18:18:57,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562630501] [2024-09-17 18:18:57,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:18:57,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-17 18:18:57,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:18:57,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-17 18:18:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=1287, Unknown=0, NotChecked=0, Total=2162 [2024-09-17 18:18:57,678 INFO L87 Difference]: Start difference. First operand 352 states and 365 transitions. Second operand has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-17 18:18:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:18:57,941 INFO L93 Difference]: Finished difference Result 371 states and 386 transitions. [2024-09-17 18:18:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-17 18:18:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 389 [2024-09-17 18:18:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:18:57,945 INFO L225 Difference]: With dead ends: 371 [2024-09-17 18:18:57,945 INFO L226 Difference]: Without dead ends: 369 [2024-09-17 18:18:57,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 811 SyntacticMatches, 77 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2119 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=881, Invalid=1375, Unknown=0, NotChecked=0, Total=2256 [2024-09-17 18:18:57,946 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 12 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:18:57,946 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 469 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:18:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-09-17 18:18:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 364. [2024-09-17 18:18:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 291 states have (on average 1.013745704467354) internal successors, (295), 292 states have internal predecessors, (295), 42 states have call successors, (42), 31 states have call predecessors, (42), 30 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-17 18:18:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 378 transitions. [2024-09-17 18:18:57,993 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 378 transitions. Word has length 389 [2024-09-17 18:18:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:18:57,994 INFO L474 AbstractCegarLoop]: Abstraction has 364 states and 378 transitions. [2024-09-17 18:18:57,994 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-17 18:18:57,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 378 transitions. [2024-09-17 18:18:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-17 18:18:57,996 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:18:57,996 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:18:58,016 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-09-17 18:18:58,197 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:18:58,197 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:18:58,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:18:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1082531032, now seen corresponding path program 46 times [2024-09-17 18:18:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:18:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138189271] [2024-09-17 18:18:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:18:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:18:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:19:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:19:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:19:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:19:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:19:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:19:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:19:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:19:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:19:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:19:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:19:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:19:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:19:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:19:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-17 18:19:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-17 18:19:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-17 18:19:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-17 18:19:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-17 18:19:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-17 18:19:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-17 18:19:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-17 18:19:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-17 18:19:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-17 18:19:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-17 18:19:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-17 18:19:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-17 18:19:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-17 18:19:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-17 18:19:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-17 18:19:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-17 18:19:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-17 18:19:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-17 18:19:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-17 18:19:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-17 18:19:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-17 18:19:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-17 18:19:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-17 18:19:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-17 18:19:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-17 18:19:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3006 proven. 1596 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-17 18:19:01,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:19:01,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138189271] [2024-09-17 18:19:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138189271] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:19:01,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236832795] [2024-09-17 18:19:01,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:19:01,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:01,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:19:01,205 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) [2024-09-17 18:19:01,206 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-17 18:19:01,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:19:01,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:19:01,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-17 18:19:01,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:19:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-17 18:19:03,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:19:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-17 18:19:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236832795] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:19:05,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:19:05,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 125 [2024-09-17 18:19:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447302883] [2024-09-17 18:19:05,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:19:05,671 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-09-17 18:19:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:19:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-09-17 18:19:05,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3530, Invalid=11970, Unknown=0, NotChecked=0, Total=15500 [2024-09-17 18:19:05,674 INFO L87 Difference]: Start difference. First operand 364 states and 378 transitions. Second operand has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-17 18:19:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:19:09,120 INFO L93 Difference]: Finished difference Result 814 states and 987 transitions. [2024-09-17 18:19:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-09-17 18:19:09,120 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 405 [2024-09-17 18:19:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:19:09,124 INFO L225 Difference]: With dead ends: 814 [2024-09-17 18:19:09,124 INFO L226 Difference]: Without dead ends: 488 [2024-09-17 18:19:09,127 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 772 SyntacticMatches, 75 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14382 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=10049, Invalid=31363, Unknown=0, NotChecked=0, Total=41412 [2024-09-17 18:19:09,128 INFO L434 NwaCegarLoop]: 126 mSDtfsCounter, 390 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-17 18:19:09,128 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1212 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-17 18:19:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-09-17 18:19:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 368. [2024-09-17 18:19:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 295 states have (on average 1.0135593220338983) internal successors, (299), 296 states have internal predecessors, (299), 42 states have call successors, (42), 31 states have call predecessors, (42), 30 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-17 18:19:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 382 transitions. [2024-09-17 18:19:09,179 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 382 transitions. Word has length 405 [2024-09-17 18:19:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:19:09,179 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 382 transitions. [2024-09-17 18:19:09,180 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-17 18:19:09,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 382 transitions. [2024-09-17 18:19:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-09-17 18:19:09,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:19:09,182 INFO L216 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:19:09,204 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-17 18:19:09,383 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:09,383 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:19:09,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash -572398046, now seen corresponding path program 47 times [2024-09-17 18:19:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:19:09,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911355786] [2024-09-17 18:19:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:19:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:19:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:19:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:19:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:19:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:19:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:19:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:19:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:19:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:19:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:19:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:19:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:19:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:19:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:19:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:19:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:19:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:19:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:19:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:19:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:19:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:19:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:19:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-17 18:19:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-17 18:19:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-17 18:19:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-17 18:19:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-17 18:19:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-17 18:19:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-17 18:19:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-17 18:19:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-17 18:19:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-17 18:19:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-17 18:19:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-17 18:19:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-17 18:19:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-17 18:19:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-17 18:19:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-17 18:19:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-17 18:19:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-17 18:19:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-17 18:19:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1638 proven. 3122 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-17 18:19:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:19:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911355786] [2024-09-17 18:19:11,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911355786] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:19:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788320744] [2024-09-17 18:19:11,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 18:19:11,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:11,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:19:11,432 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) [2024-09-17 18:19:11,433 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-17 18:19:11,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2024-09-17 18:19:11,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:19:11,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-09-17 18:19:11,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:19:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-17 18:19:11,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:19:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-17 18:19:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788320744] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:19:13,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:19:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 49 [2024-09-17 18:19:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852019700] [2024-09-17 18:19:13,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:19:13,266 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-17 18:19:13,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:19:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-17 18:19:13,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=1392, Unknown=0, NotChecked=0, Total=2352 [2024-09-17 18:19:13,268 INFO L87 Difference]: Start difference. First operand 368 states and 382 transitions. Second operand has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-17 18:19:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:19:13,587 INFO L93 Difference]: Finished difference Result 387 states and 403 transitions. [2024-09-17 18:19:13,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-17 18:19:13,588 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 409 [2024-09-17 18:19:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:19:13,591 INFO L225 Difference]: With dead ends: 387 [2024-09-17 18:19:13,591 INFO L226 Difference]: Without dead ends: 385 [2024-09-17 18:19:13,591 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 853 SyntacticMatches, 81 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2311 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=966, Invalid=1484, Unknown=0, NotChecked=0, Total=2450 [2024-09-17 18:19:13,592 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 12 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:19:13,592 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 541 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:19:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-09-17 18:19:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2024-09-17 18:19:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 304 states have (on average 1.013157894736842) internal successors, (308), 305 states have internal predecessors, (308), 44 states have call successors, (44), 32 states have call predecessors, (44), 31 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-17 18:19:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 395 transitions. [2024-09-17 18:19:13,658 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 395 transitions. Word has length 409 [2024-09-17 18:19:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:19:13,659 INFO L474 AbstractCegarLoop]: Abstraction has 380 states and 395 transitions. [2024-09-17 18:19:13,659 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-17 18:19:13,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 395 transitions. [2024-09-17 18:19:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-09-17 18:19:13,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:19:13,662 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:19:13,681 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-17 18:19:13,862 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-17 18:19:13,862 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:19:13,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 223911172, now seen corresponding path program 48 times [2024-09-17 18:19:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:19:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536921110] [2024-09-17 18:19:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:19:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:19:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:19:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 18:19:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:19:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:19:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:19:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:19:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:19:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:19:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:19:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:19:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:19:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:19:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:19:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:19:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:19:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:19:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:19:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:19:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:19:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:19:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:19:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-17 18:19:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-17 18:19:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-17 18:19:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-17 18:19:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-17 18:19:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-17 18:19:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-17 18:19:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-17 18:19:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-17 18:19:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-17 18:19:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-17 18:19:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-17 18:19:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-17 18:19:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-17 18:19:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-17 18:19:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-17 18:19:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-17 18:19:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-17 18:19:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-17 18:19:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-17 18:19:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-17 18:19:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3324 proven. 1760 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-17 18:19:17,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:19:17,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536921110] [2024-09-17 18:19:17,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536921110] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:19:17,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565001451] [2024-09-17 18:19:17,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 18:19:17,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:19:17,107 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) [2024-09-17 18:19:17,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-17 18:19:17,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-09-17 18:19:17,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:19:17,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-17 18:19:17,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:19:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-17 18:19:19,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:19:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-17 18:19:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565001451] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:19:21,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:19:21,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 131 [2024-09-17 18:19:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015263542] [2024-09-17 18:19:21,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:19:21,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-17 18:19:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:19:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-17 18:19:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3874, Invalid=13156, Unknown=0, NotChecked=0, Total=17030 [2024-09-17 18:19:21,833 INFO L87 Difference]: Start difference. First operand 380 states and 395 transitions. Second operand has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-17 18:19:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:19:25,567 INFO L93 Difference]: Finished difference Result 852 states and 1034 transitions. [2024-09-17 18:19:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-09-17 18:19:25,567 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Word has length 425 [2024-09-17 18:19:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:19:25,571 INFO L225 Difference]: With dead ends: 852 [2024-09-17 18:19:25,571 INFO L226 Difference]: Without dead ends: 510 [2024-09-17 18:19:25,575 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 810 SyntacticMatches, 79 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15846 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=11055, Invalid=34527, Unknown=0, NotChecked=0, Total=45582 [2024-09-17 18:19:25,576 INFO L434 NwaCegarLoop]: 132 mSDtfsCounter, 428 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-17 18:19:25,576 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1240 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-17 18:19:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-09-17 18:19:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 384. [2024-09-17 18:19:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 308 states have (on average 1.0129870129870129) internal successors, (312), 309 states have internal predecessors, (312), 44 states have call successors, (44), 32 states have call predecessors, (44), 31 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-17 18:19:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 399 transitions. [2024-09-17 18:19:25,634 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 399 transitions. Word has length 425 [2024-09-17 18:19:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:19:25,634 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 399 transitions. [2024-09-17 18:19:25,634 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-17 18:19:25,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 399 transitions. [2024-09-17 18:19:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-09-17 18:19:25,637 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:19:25,637 INFO L216 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:19:25,663 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-17 18:19:25,837 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:25,838 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:19:25,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:25,838 INFO L85 PathProgramCache]: Analyzing trace with hash 741137742, now seen corresponding path program 49 times [2024-09-17 18:19:25,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:19:25,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899480754] [2024-09-17 18:19:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:19:25,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:19:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:19:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:19:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:19:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:19:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:19:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:19:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:19:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:19:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:19:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:19:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:19:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:19:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:19:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-17 18:19:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-17 18:19:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-17 18:19:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-17 18:19:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-17 18:19:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-17 18:19:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-17 18:19:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-17 18:19:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-17 18:19:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-17 18:19:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-17 18:19:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-17 18:19:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-17 18:19:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-17 18:19:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-17 18:19:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-17 18:19:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-17 18:19:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-17 18:19:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-17 18:19:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-17 18:19:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-17 18:19:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-17 18:19:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-17 18:19:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-17 18:19:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-17 18:19:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-17 18:19:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-17 18:19:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-17 18:19:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-17 18:19:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1804 proven. 3446 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-17 18:19:28,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:19:28,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899480754] [2024-09-17 18:19:28,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899480754] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:19:28,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47546999] [2024-09-17 18:19:28,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 18:19:28,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:28,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:19:28,112 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) [2024-09-17 18:19:28,113 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-17 18:19:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:28,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-09-17 18:19:28,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:19:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-17 18:19:28,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:19:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-17 18:19:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47546999] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:19:29,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:19:29,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 51 [2024-09-17 18:19:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027247844] [2024-09-17 18:19:29,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:19:29,983 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-17 18:19:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:19:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-17 18:19:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1049, Invalid=1501, Unknown=0, NotChecked=0, Total=2550 [2024-09-17 18:19:29,985 INFO L87 Difference]: Start difference. First operand 384 states and 399 transitions. Second operand has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-17 18:19:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:19:30,268 INFO L93 Difference]: Finished difference Result 403 states and 420 transitions. [2024-09-17 18:19:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-17 18:19:30,268 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 429 [2024-09-17 18:19:30,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:19:30,272 INFO L225 Difference]: With dead ends: 403 [2024-09-17 18:19:30,272 INFO L226 Difference]: Without dead ends: 401 [2024-09-17 18:19:30,272 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 895 SyntacticMatches, 85 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1055, Invalid=1597, Unknown=0, NotChecked=0, Total=2652 [2024-09-17 18:19:30,273 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 12 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:19:30,273 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 550 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:19:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-09-17 18:19:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2024-09-17 18:19:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 317 states have (on average 1.0126182965299684) internal successors, (321), 318 states have internal predecessors, (321), 46 states have call successors, (46), 33 states have call predecessors, (46), 32 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-17 18:19:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 412 transitions. [2024-09-17 18:19:30,329 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 412 transitions. Word has length 429 [2024-09-17 18:19:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:19:30,330 INFO L474 AbstractCegarLoop]: Abstraction has 396 states and 412 transitions. [2024-09-17 18:19:30,330 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-17 18:19:30,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 412 transitions. [2024-09-17 18:19:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-09-17 18:19:30,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:19:30,333 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:19:30,352 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-17 18:19:30,533 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:30,534 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:19:30,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1242020912, now seen corresponding path program 50 times [2024-09-17 18:19:30,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:19:30,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683101112] [2024-09-17 18:19:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:19:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:19:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:19:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:19:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-17 18:19:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-17 18:19:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:19:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-17 18:19:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-17 18:19:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-17 18:19:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-17 18:19:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:19:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-17 18:19:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-17 18:19:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-17 18:19:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-17 18:19:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-17 18:19:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-17 18:19:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-17 18:19:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-17 18:19:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-17 18:19:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-17 18:19:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-17 18:19:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-17 18:19:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-17 18:19:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-17 18:19:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-17 18:19:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-17 18:19:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-17 18:19:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-17 18:19:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-17 18:19:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-17 18:19:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-17 18:19:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-17 18:19:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-17 18:19:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-17 18:19:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-17 18:19:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-17 18:19:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-17 18:19:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-17 18:19:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-17 18:19:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-17 18:19:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-17 18:19:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-17 18:19:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-17 18:19:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-17 18:19:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3658 proven. 1932 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-17 18:19:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:19:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683101112] [2024-09-17 18:19:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683101112] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:19:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743392712] [2024-09-17 18:19:34,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:19:34,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:19:34,122 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) [2024-09-17 18:19:34,123 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-17 18:19:34,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:19:34,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:19:34,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-17 18:19:34,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:19:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3948 proven. 1806 refuted. 0 times theorem prover too weak. 3448 trivial. 0 not checked. [2024-09-17 18:19:37,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:19:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3782 proven. 1806 refuted. 0 times theorem prover too weak. 3614 trivial. 0 not checked. [2024-09-17 18:19:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743392712] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:19:39,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:19:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88, 88] total 134 [2024-09-17 18:19:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895066863] [2024-09-17 18:19:39,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:19:39,218 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-17 18:19:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:19:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-17 18:19:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=13814, Unknown=0, NotChecked=0, Total=17822 [2024-09-17 18:19:39,221 INFO L87 Difference]: Start difference. First operand 396 states and 412 transitions. Second operand has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) [2024-09-17 18:19:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:19:41,919 INFO L93 Difference]: Finished difference Result 712 states and 857 transitions. [2024-09-17 18:19:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-17 18:19:41,919 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) Word has length 445 [2024-09-17 18:19:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:19:41,923 INFO L225 Difference]: With dead ends: 712 [2024-09-17 18:19:41,923 INFO L226 Difference]: Without dead ends: 527 [2024-09-17 18:19:41,926 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 850 SyntacticMatches, 84 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11671 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=7794, Invalid=23358, Unknown=0, NotChecked=0, Total=31152 [2024-09-17 18:19:41,927 INFO L434 NwaCegarLoop]: 138 mSDtfsCounter, 402 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-17 18:19:41,927 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1069 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-17 18:19:41,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-09-17 18:19:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 398. [2024-09-17 18:19:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 319 states have (on average 1.0125391849529781) internal successors, (323), 320 states have internal predecessors, (323), 46 states have call successors, (46), 33 states have call predecessors, (46), 32 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-17 18:19:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 414 transitions. [2024-09-17 18:19:41,992 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 414 transitions. Word has length 445 [2024-09-17 18:19:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:19:41,992 INFO L474 AbstractCegarLoop]: Abstraction has 398 states and 414 transitions. [2024-09-17 18:19:41,993 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) [2024-09-17 18:19:41,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 414 transitions. [2024-09-17 18:19:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-09-17 18:19:41,996 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:19:41,996 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:19:42,017 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-17 18:19:42,200 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-09-17 18:19:42,201 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:19:42,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1511265909, now seen corresponding path program 51 times [2024-09-17 18:19:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:19:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95232735] [2024-09-17 18:19:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:19:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:19:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:19:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:19:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-17 18:19:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-17 18:19:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-17 18:19:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:19:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-17 18:19:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-17 18:19:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-17 18:19:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-17 18:19:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-17 18:19:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-17 18:19:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-17 18:19:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-17 18:19:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-17 18:19:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-17 18:19:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-17 18:19:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-17 18:19:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-17 18:19:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-17 18:19:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-17 18:19:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-17 18:19:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-17 18:19:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-17 18:19:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-17 18:19:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-17 18:19:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-17 18:19:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-17 18:19:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-17 18:19:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-17 18:19:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-17 18:19:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-17 18:19:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-17 18:19:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-17 18:19:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-17 18:19:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-17 18:19:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-17 18:19:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-17 18:19:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-17 18:19:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-17 18:19:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-17 18:19:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-17 18:19:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-17 18:19:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-17 18:19:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:19:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-17 18:19:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:19:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95232735] [2024-09-17 18:19:45,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95232735] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:19:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523552889] [2024-09-17 18:19:45,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:19:45,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:45,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:19:45,824 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) [2024-09-17 18:19:45,828 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-17 18:19:46,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-09-17 18:19:46,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:19:46,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-17 18:19:46,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:19:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-17 18:19:48,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:19:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-17 18:19:52,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523552889] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:19:52,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:19:52,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 48, 48] total 136 [2024-09-17 18:19:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126725770] [2024-09-17 18:19:52,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:19:52,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-09-17 18:19:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:19:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-09-17 18:19:52,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3064, Invalid=15296, Unknown=0, NotChecked=0, Total=18360 [2024-09-17 18:19:52,114 INFO L87 Difference]: Start difference. First operand 398 states and 414 transitions. Second operand has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-09-17 18:19:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:19:56,326 INFO L93 Difference]: Finished difference Result 724 states and 873 transitions. [2024-09-17 18:19:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2024-09-17 18:19:56,327 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Word has length 447 [2024-09-17 18:19:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:19:56,332 INFO L225 Difference]: With dead ends: 724 [2024-09-17 18:19:56,332 INFO L226 Difference]: Without dead ends: 541 [2024-09-17 18:19:56,340 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 892 SyntacticMatches, 89 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33062 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=12149, Invalid=59407, Unknown=0, NotChecked=0, Total=71556 [2024-09-17 18:19:56,340 INFO L434 NwaCegarLoop]: 139 mSDtfsCounter, 667 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-17 18:19:56,340 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1916 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-17 18:19:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-09-17 18:19:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 408. [2024-09-17 18:19:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 327 states have (on average 1.0122324159021407) internal successors, (331), 328 states have internal predecessors, (331), 47 states have call successors, (47), 34 states have call predecessors, (47), 33 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-17 18:19:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 424 transitions. [2024-09-17 18:19:56,405 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 424 transitions. Word has length 447 [2024-09-17 18:19:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:19:56,406 INFO L474 AbstractCegarLoop]: Abstraction has 408 states and 424 transitions. [2024-09-17 18:19:56,406 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-09-17 18:19:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 424 transitions. [2024-09-17 18:19:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-09-17 18:19:56,409 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:19:56,410 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:19:56,435 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-17 18:19:56,610 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:19:56,611 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:19:56,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:19:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1132902251, now seen corresponding path program 52 times [2024-09-17 18:19:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:19:56,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678987393] [2024-09-17 18:19:56,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:19:56,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:19:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:20:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-17 18:20:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:20:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-17 18:20:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-17 18:20:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:20:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:20:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-17 18:20:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-17 18:20:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-17 18:20:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-17 18:20:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-17 18:20:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-17 18:20:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-17 18:20:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-17 18:20:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-17 18:20:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-17 18:20:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-17 18:20:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-17 18:20:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-17 18:20:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-17 18:20:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-17 18:20:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-17 18:20:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-17 18:20:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-17 18:20:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-17 18:20:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-17 18:20:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-17 18:20:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-17 18:20:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-17 18:20:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-17 18:20:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-17 18:20:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-17 18:20:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-17 18:20:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-17 18:20:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-17 18:20:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-17 18:20:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-17 18:20:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-17 18:20:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-17 18:20:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-17 18:20:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-17 18:20:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-17 18:20:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-17 18:20:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-17 18:20:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:20:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-17 18:20:00,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:20:00,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678987393] [2024-09-17 18:20:00,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678987393] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:20:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451871616] [2024-09-17 18:20:00,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:20:00,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:20:00,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:20:00,395 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) [2024-09-17 18:20:00,396 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-17 18:20:00,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:20:00,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:20:00,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-17 18:20:00,654 INFO L285 TraceCheckSpWp]: Computing forward predicates...